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Antique Edwardian 1910s 5.00 Carat Diamond Brooch with Onyx
Antique Edwardian 1910s 5.00 Carat Diamond Brooch with Onyx

Antique Edwardian 1910s 5.00 Carat Diamond Brooch with Onyx

Located in New York, NY

Finely crafted in platinum with a Modified Square cut Diamond at the center weighing approximately

Category

1910s Edwardian Antique Square Cut Diamond

Materials

Diamond, Onyx, Platinum

Antique Art Deco 1920s 8.50 Carat Diamond Openwork Brooch
Antique Art Deco 1920s 8.50 Carat Diamond Openwork Brooch

Antique Art Deco 1920s 8.50 Carat Diamond Openwork Brooch

Located in New York, NY

Finely crafted in platinum with Old European, Baguette, and Square cut Diamonds weighing

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

5.02 Carat Diamond Emerald Art Deco Platinum Pendant Necklace
5.02 Carat Diamond Emerald Art Deco Platinum Pendant Necklace

5.02 Carat Diamond Emerald Art Deco Platinum Pendant Necklace

Located in Stamford, CT

Art Deco 1915 handmade emerald and diamonds pendant necklace. Old Euro, Old Mine, Old square cut

Category

Early 20th Century Antique Square Cut Diamond

Materials

Diamond, Emerald, Platinum

Art Deco Emerald & Diamond Tennis Bracelet
Art Deco Emerald & Diamond Tennis Bracelet

Art Deco Emerald & Diamond Tennis Bracelet

Located in New York, NY

Art Deco Emerald & Diamond Tennis Bracelet A bracelet consisting of a pattern of 42 square cut

Category

1920s Antique Square Cut Diamond

Materials

Diamond, Emerald, 18k Gold, White Gold

Art Deco Diamond Bracelet
Art Deco Diamond Bracelet

Art Deco Diamond Bracelet

Located in Sausalito, CA

diamonds, consisting of: 270 single cut diamonds 9 square cut diamonds 18 baguette diamonds 3 old euro

Category

Early 20th Century Antique Square Cut Diamond

Two-Tone 18 Karat Gold Diamond Floral Necklace
Two-Tone 18 Karat Gold Diamond Floral Necklace

Two-Tone 18 Karat Gold Diamond Floral Necklace

Located in New York, NY

luminous diamond drops. The piece is set with 17 pear-shaped diamonds, 8 square-cut diamonds, and 458 round

Category

1920s Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, White Diamond, Gold, 18k Gold, White Gold, Yellow Gold

Art Deco Platinum and Diamond Cocktail Ring
Art Deco Platinum and Diamond Cocktail Ring

Art Deco Platinum and Diamond Cocktail Ring

Located in Great Neck Plaza, NY

diamonds totaling approximately 1.60 carats. Complementing the central diamond are 30 square-cut diamonds

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Cartier Art Deco Diamond and Platinum Bracelet, 22.40 Carats, Circa 1929
Cartier Art Deco Diamond and Platinum Bracelet, 22.40 Carats, Circa 1929

Cartier Art Deco Diamond and Platinum Bracelet, 22.40 Carats, Circa 1929

By Cartier

Located in London, GB

square-cut diamonds, flanked by two, entwined, D-shaped motifs, pavé set with round brilliant and old

Category

Early 20th Century French Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Cartier French Art Deco Diamond and Platinum Bracelet, 18.70 Carats, Circa 1929
Cartier French Art Deco Diamond and Platinum Bracelet, 18.70 Carats, Circa 1929

Cartier French Art Deco Diamond and Platinum Bracelet, 18.70 Carats, Circa 1929

By Cartier

Located in London, GB

raised, box set, square-cut diamonds and pentagonal spatula shaped connections, at either end of each

Category

1920s French Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Vintage Square Emerald and Single Cut Diamond Ring 14k Yellow Gold
Vintage Square Emerald and Single Cut Diamond Ring 14k Yellow Gold

Vintage Square Emerald and Single Cut Diamond Ring 14k Yellow Gold

Located in beverly hills, CA

yellow gold, this ring features a square cut emerald weighing approximately 0.80 carat, encircled by 14

Category

Mid-19th Century Antique Square Cut Diamond

Materials

Diamond, Emerald, 14k Gold, Yellow Gold

Vintage 1920s Platinum Stamped, Diamond & Ruby Buckle Style Cocktail Ring
Vintage 1920s Platinum Stamped, Diamond & Ruby Buckle Style Cocktail Ring

Vintage 1920s Platinum Stamped, Diamond & Ruby Buckle Style Cocktail Ring

Located in Brighton, GB

-style cocktail ring is adorned with natural Baguette-cut, Emerald cut, Old European cut and Square-cut

Category

Early 20th Century European Antique Square Cut Diamond

Materials

Diamond, Ruby, Platinum

E. M. Gattle & Co. 1920s Art Deco Diamond and Platinum Brooch
E. M. Gattle & Co. 1920s Art Deco Diamond and Platinum Brooch

E. M. Gattle & Co. 1920s Art Deco Diamond and Platinum Brooch

Located in New York, NY

European-cut diamonds with an approximate total weight of 4.50 carats, and 5 square-cut diamonds with an

Category

1920s American Art Deco Antique Square Cut Diamond

Materials

White Diamond, Diamond, Platinum

Antique Colombian Emerald Diamond and Seed Pearl Square Cocktail Ring
Antique Colombian Emerald Diamond and Seed Pearl Square Cocktail Ring

Antique Colombian Emerald Diamond and Seed Pearl Square Cocktail Ring

Located in Denver, CO

(circa 1820s-1840s), features a bezel-set, square-cut Colombian emerald in a closed-back, foiled setting

Category

Mid-19th Century Antique Square Cut Diamond

Materials

Diamond, Emerald, Pearl, 18k Gold, Yellow Gold

Ruby Diamond 18K Yellow Gold Angled Square Cluster Pendant
Ruby Diamond 18K Yellow Gold Angled Square Cluster Pendant

Ruby Diamond 18K Yellow Gold Angled Square Cluster Pendant

Located in London, GB

eight red square cut rubies surrounding a round brilliant cut diamond. Stamped 750 for 18 karat gold to

Category

1920s Unknown Antique Square Cut Diamond

Materials

Diamond, Ruby, Gold, 18k Gold, Yellow Gold

ART-DECO 1925 Platinum Bracelet With 21.66 Cwt. In French Cut Diamonds & Rubies
ART-DECO 1925 Platinum Bracelet With 21.66 Cwt. In French Cut Diamonds & Rubies

ART-DECO 1925 Platinum Bracelet With 21.66 Cwt. In French Cut Diamonds & Rubies

Located in Miami, FL

diamonds, French calibré-cut square diamonds, and vivid red rubies. The total combined weight of the

Category

1920s American Art Deco Antique Square Cut Diamond

Materials

Diamond, Ruby, White Diamond, Platinum

2.80 Carat Carré Cut Diamond Three-Stone Ring
2.80 Carat Carré Cut Diamond Three-Stone Ring

2.80 Carat Carré Cut Diamond Three-Stone Ring

Located in London, GB

carat carré-cut diamond takes prominence, exuding radiance and clarity. Flanking this impressive

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Art Deco Platinum Diamond & Sapphire Open Square Cut Corner Ribbon Top Brooch
Art Deco Platinum Diamond & Sapphire Open Square Cut Corner Ribbon Top Brooch

Art Deco Platinum Diamond & Sapphire Open Square Cut Corner Ribbon Top Brooch

Located in Montclair, NJ

-- Stone(s) -- (77) Natural Genuine Diamonds - Old Mine & Single Cut - Pave Set - Nice

Category

19th Century Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, White Gold, Platinum

Art Deco Colombian Square Cut Emerald Diamond Platinum Three-Stone Ring
Art Deco Colombian Square Cut Emerald Diamond Platinum Three-Stone Ring

Art Deco Colombian Square Cut Emerald Diamond Platinum Three-Stone Ring

Located in Greenwich, CT

2.78 carat square cut emerald ring attributed to the most ancient of mines. With an exceptional and

Category

1920s American Art Deco Antique Square Cut Diamond

Materials

Emerald, White Diamond, Platinum

Art Deco Diamond Platinum Ring. 1.40ct Old Euro Cut Diamond Square Ring J VS1
Art Deco Diamond Platinum Ring. 1.40ct Old Euro Cut Diamond Square Ring J VS1

Art Deco Diamond Platinum Ring. 1.40ct Old Euro Cut Diamond Square Ring J VS1

Located in New York, NY

This exquisite Art Deco ring showcases a stunning old European cut diamond weighing approximately

Category

1920s Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum, White Gold

Antique Platinum Horse and Huntsman Brooch, 1.77ct Diamonds
Antique Platinum Horse and Huntsman Brooch, 1.77ct Diamonds

Antique Platinum Horse and Huntsman Brooch, 1.77ct Diamonds

Located in Jesmond, Newcastle Upon Tyne

European, eight and square cut diamonds, in a combination of collet and pavé settings. This horse brooch

Category

1910s Unknown Antique Square Cut Diamond

Materials

Diamond, Platinum, Enamel, White Gold

Antique Victorian Agate, Carved Quartz, Diamond and Turquoise, 15ct Yellow Gold
Antique Victorian Agate, Carved Quartz, Diamond and Turquoise, 15ct Yellow Gold

Antique Victorian Agate, Carved Quartz, Diamond and Turquoise, 15ct Yellow Gold

Located in Jesmond, Newcastle Upon Tyne

collet set agate, enhanced to the centre with a collet set, 0.08ct square cut diamond. The pendant is

Category

19th Century Unknown Victorian Antique Square Cut Diamond

Materials

Agate, Diamond, Quartz, Turquoise, Yellow Gold

Antique Art Deco 1920s 1.20 Carat Asscher Cut Diamond Square Ring with Emeralds
Antique Art Deco 1920s 1.20 Carat Asscher Cut Diamond Square Ring with Emeralds

Antique Art Deco 1920s 1.20 Carat Asscher Cut Diamond Square Ring with Emeralds

Located in New York, NY

Finely crafted in platinum and 18k yellow gold with an Asscher cut Diamond, accenting Emeralds, and

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Emerald, 18k Gold, Platinum

Platinum Art Deco Ring. 1.40ct Old Euro Cut Diamond Square Ring Platinum J VS1
Platinum Art Deco Ring. 1.40ct Old Euro Cut Diamond Square Ring Platinum J VS1

Platinum Art Deco Ring. 1.40ct Old Euro Cut Diamond Square Ring Platinum J VS1

Located in New York, NY

Clarity Secondary Stone: Diamonds Secondary Stone Weight: Approx. 0.40-Carats Secondary Stone Cut: Old

Category

1920s Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, White Gold, Platinum

C1690 18K Iberian Bow Form Ring with Table Cut Diamonds
C1690 18K Iberian Bow Form Ring with Table Cut Diamonds

C1690 18K Iberian Bow Form Ring with Table Cut Diamonds

Located in Baltimore, MD

Peninsula. This cluster ring is set with 7 table-cut deep diamonds totaling almost 1 carat in rubbed over

Category

1690s Spanish Baroque Antique Square Cut Diamond

Materials

Diamond, 18k Gold

French Antique Diamond Band Sz 4.75 Platinum Wedding Ring Eternity Table Cuts
French Antique Diamond Band Sz 4.75 Platinum Wedding Ring Eternity Table Cuts

French Antique Diamond Band Sz 4.75 Platinum Wedding Ring Eternity Table Cuts

Located in Torrance, CA

Elegant antique French diamond eternity ring (circa 1900s to 1910s). Antique table cut square

Category

Early 20th Century French Edwardian Antique Square Cut Diamond

Materials

Diamond, White Diamond, Platinum

0.70 Carat Square Brilliant Princess Cut  Gia Certified H Color I1 Clarity Diamo
0.70 Carat Square Brilliant Princess Cut  Gia Certified H Color I1 Clarity Diamo

0.70 Carat Square Brilliant Princess Cut Gia Certified H Color I1 Clarity Diamo

Located in New York, NY

ITEM DESCRIPTION ID #: NYC56562 Stone Shape: SQUARE MODIFIED BRILLIANT Diamond Weight: 0.70ct

Category

15th Century and Earlier Antique Square Cut Diamond

Materials

White Diamond

Art Deco 1.00 Carat Sapphire and 1.20 Carat Diamond Platinum Earrings Circa 1920
Art Deco 1.00 Carat Sapphire and 1.20 Carat Diamond Platinum Earrings Circa 1920

Art Deco 1.00 Carat Sapphire and 1.20 Carat Diamond Platinum Earrings Circa 1920

Located in Jesmond, Newcastle Upon Tyne

with a four-claw set square cut diamond, completing the design. These Art Deco earrings, for non

Category

1920s Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, White Gold, Platinum

Antique Art Deco Platinum Old Cut Diamond & Emerald Large Ribbon Bow Pin Brooch
Antique Art Deco Platinum Old Cut Diamond & Emerald Large Ribbon Bow Pin Brooch

Antique Art Deco Platinum Old Cut Diamond & Emerald Large Ribbon Bow Pin Brooch

Located in Montclair, NJ

with old cut diamonds. These emeralds add such a rich and wonderful touch of color to this important

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Emerald, Platinum

Antique Art Deco 18.36 Carat Diamond and Platinum Bracelet Circa 1920
Antique Art Deco 18.36 Carat Diamond and Platinum Bracelet Circa 1920

Antique Art Deco 18.36 Carat Diamond and Platinum Bracelet Circa 1920

Located in Jesmond, Newcastle Upon Tyne

square cut diamonds. This feature central array is encompassed with eighteen pavé set Old European cut

Category

1920s Unknown Antique Square Cut Diamond

Materials

Diamond, Platinum

Antique Art Deco 2.18ct Diamond and 18ct White Gold Brooch Circa 1925
Antique Art Deco 2.18ct Diamond and 18ct White Gold Brooch Circa 1925

Antique Art Deco 2.18ct Diamond and 18ct White Gold Brooch Circa 1925

Located in Jesmond, Newcastle Upon Tyne

fancy brown diamond. The feature diamond is flanked with two collet set square cut diamonds and

Category

1920s Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, White Gold

Antique 18ct Gold, 1920s Art Deco Square Set Diamond Engagement Ring
Antique 18ct Gold, 1920s Art Deco Square Set Diamond Engagement Ring

Antique 18ct Gold, 1920s Art Deco Square Set Diamond Engagement Ring

Located in Brighton, GB

Antique Square Engagement Ring 18ct Gold / Platinum Stamped Circa 1920 Pretty Art Deco Diamond

Category

Early 20th Century Antique Square Cut Diamond

Materials

Diamond, Gold, 18k Gold

Edwardian Old Cut Diamond Navette Ring
Edwardian Old Cut Diamond Navette Ring

Edwardian Old Cut Diamond Navette Ring

Located in London, GB

of the face lies and an antique square cushion cut diamond. This unique principal stone possesses a

Category

Early 1900s Edwardian Antique Square Cut Diamond

Materials

Diamond, Gold, 18k Gold, Yellow Gold, Platinum

Antique 18ct Gold Art Deco Ruby & Diamond Square Ring
Antique 18ct Gold Art Deco Ruby & Diamond Square Ring

Antique 18ct Gold Art Deco Ruby & Diamond Square Ring

Located in Brighton, GB

Antique Art Deco Ring 18ct Gold Tested Circa 1920’s Fabulous, Art Deco ring. A beautiful square

Category

Early 20th Century English Art Deco Antique Square Cut Diamond

Materials

Diamond, Ruby, Gold, 18k Gold

Vintage Cartier 5.36 Carats Total Square Emerald Cut 3-Stone Engagement Ring
Vintage Cartier 5.36 Carats Total Square Emerald Cut 3-Stone Engagement Ring

Vintage Cartier 5.36 Carats Total Square Emerald Cut 3-Stone Engagement Ring

By Cartier

Located in Scottsdale, AZ

square emerald cut diamond at its center, set in a crisp, high-polish platinum setting. The bold geometry

Category

Early 20th Century Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Antique Art Deco 14K White Gold Old European Cut Diamond Sapphire Link Bracelet
Antique Art Deco 14K White Gold Old European Cut Diamond Sapphire Link Bracelet

Antique Art Deco 14K White Gold Old European Cut Diamond Sapphire Link Bracelet

Located in Houston, TX

One ladies custom made filigreed 14K white gold, sapphire and diamond link bracelet. The metal was

Category

Early 20th Century Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, Gold, 14k Gold, White Gold

Antique Sapphire and Diamond Bracelet. 12.50ct Square Sapphire Diamond Bracelet
Antique Sapphire and Diamond Bracelet. 12.50ct Square Sapphire Diamond Bracelet

Antique Sapphire and Diamond Bracelet. 12.50ct Square Sapphire Diamond Bracelet

Located in New York, NY

12.50-Carats Primary Stone Cut: Square Cut Secondary Stone: Diamonds Secondary Stone Weight: Approx

Category

Early 1900s Edwardian Antique Square Cut Diamond

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

0.74 Carat Square Brilliant Gia Certified K Color I2 Clarity Diamond
0.74 Carat Square Brilliant Gia Certified K Color I2 Clarity Diamond

0.74 Carat Square Brilliant Gia Certified K Color I2 Clarity Diamond

Located in New York, NY

ITEM DESCRIPTION ID #: NYC56895 Stone Shape: SQUARE MODIFIED BRILLIANT Diamond Weight: 0.74ct

Category

15th Century and Earlier Antique Square Cut Diamond

Materials

White Diamond

Vintage Art Deco Diamond Ruby Square Ring Sz 7.25 Platinum Jewelry 1920s
Vintage Art Deco Diamond Ruby Square Ring Sz 7.25 Platinum Jewelry 1920s

Vintage Art Deco Diamond Ruby Square Ring Sz 7.25 Platinum Jewelry 1920s

Located in Torrance, CA

color and VS2-SI2 clarity). Two cabochon cut half moon rubies (lab) accent the diamonds. The square

Category

Early 20th Century American Art Deco Antique Square Cut Diamond

Materials

Diamond, White Diamond, Ruby, Platinum

Square shaped Dore Bronze Mounted Cut Crystal Jewelry Box, by Baccarat
Square shaped Dore Bronze Mounted Cut Crystal Jewelry Box, by Baccarat

Square shaped Dore Bronze Mounted Cut Crystal Jewelry Box, by Baccarat

By Cristalleries De Baccarat

Located in New York, NY

crystal panels hand cut in a grid pattern, each panel decorated with repeating diamond and square cuts

Category

1830s French Empire Antique Square Cut Diamond

Materials

Crystal, Bronze

Art Deco Geometric Platinum French Cut & Old Cut Diamond Bracelet
Art Deco Geometric Platinum French Cut & Old Cut Diamond Bracelet

Art Deco Geometric Platinum French Cut & Old Cut Diamond Bracelet

Located in Los Angeles, CA

estimated to be G-H and clarities estimated VS1-VS2. Also featuring: 4 larger Square French Cut diamonds

Category

1920s American Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Art Deco Emerald and Diamond Ring. Square Emerald Diamond Accent Ring Platinum
Art Deco Emerald and Diamond Ring. Square Emerald Diamond Accent Ring Platinum

Art Deco Emerald and Diamond Ring. Square Emerald Diamond Accent Ring Platinum

Located in New York, NY

that define the era. At its center sits a captivating approx 0.70-carat square-cut emerald, set

Category

1920s Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Emerald, Platinum

Antique Men's 0.08 Carat Round Diamond  Squared Ring 18k Gold
Antique Men's 0.08 Carat Round Diamond  Squared Ring 18k Gold

Antique Men's 0.08 Carat Round Diamond Squared Ring 18k Gold

Located in Miami, FL

Antique Men's 0.08 Carat G/VS Single Cut Round Diamond Squared Ring 18k Gold. Very elegant ring

Category

1920s Antique Square Cut Diamond

Materials

Diamond, 18k Gold

1.30 Ct. Art Deco Cushion-Cut Diamond Ring in Platinum
1.30 Ct. Art Deco Cushion-Cut Diamond Ring in Platinum

1.30 Ct. Art Deco Cushion-Cut Diamond Ring in Platinum

Located in Houston, TX

square step-cut diamonds in a finely-detailed openwork mounting enhanced by bead-set diamonds and

Category

1920s Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

GIA Certified Antique 1.61 Carat Diamond and Platinum Ring Circa 1925
GIA Certified Antique 1.61 Carat Diamond and Platinum Ring Circa 1925

GIA Certified Antique 1.61 Carat Diamond and Platinum Ring Circa 1925

Located in Jesmond, Newcastle Upon Tyne

set antique 1.36ct square step cut diamond. The elevated and pierced decorated shoulders are each

Category

1920s Antique Square Cut Diamond

Materials

Diamond, Platinum

Cartier Art Deco Sapphire and Diamond Arrow Jabot Pin
Cartier Art Deco Sapphire and Diamond Arrow Jabot Pin

Cartier Art Deco Sapphire and Diamond Arrow Jabot Pin

By Cartier

Located in London, GB

flights and tips being set with calibre-cut sapphires in 18ct yellow gold and rose cut diamonds in a fine

Category

1920s Antique Square Cut Diamond

Materials

Diamond, Sapphire, 18k Gold

Art Deco Old European Cut Diamond & Ruby Navette Ring
Art Deco Old European Cut Diamond & Ruby Navette Ring

Art Deco Old European Cut Diamond & Ruby Navette Ring

Located in New York, NY

& square cut rubies. Center Stone Weight: approximately 1.25 carats Two Side Diamond Weights

Category

1920s Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Ruby, 14k Gold, White Gold, Yellow Gold

Art Deco 10.00 Carat Aquamarine and Diamond Ring
Art Deco 10.00 Carat Aquamarine and Diamond Ring

Art Deco 10.00 Carat Aquamarine and Diamond Ring

Located in London, GB

centre of the face we find a captivating square-cut aquamarine boasting a gorgeous pastel blue colour

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Aquamarine, Diamond, Platinum

Antique Old European Cut Diamond Ring, circa Early 1900s
Antique Old European Cut Diamond Ring, circa Early 1900s

Antique Old European Cut Diamond Ring, circa Early 1900s

Located in San Francisco, CA

Diamond is flanked on either side by a rich blue square cut sapphire, and 18 round diamonds are set

Category

Early 20th Century Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Antique 4.48 Carat Sapphire 4.35 Carat Diamond Platinum Line Bracelet Circa 1920
Antique 4.48 Carat Sapphire 4.35 Carat Diamond Platinum Line Bracelet Circa 1920

Antique 4.48 Carat Sapphire 4.35 Carat Diamond Platinum Line Bracelet Circa 1920

Located in Jesmond, Newcastle Upon Tyne

square frame. The centre of each link is further ornamented with two pavé set eight cut diamonds, in a

Category

1920s Unknown Antique Square Cut Diamond

Materials

Diamond, Sapphire, Platinum

Art Deco Ruby Pearl and Diamond Necklace
Art Deco Ruby Pearl and Diamond Necklace

Art Deco Ruby Pearl and Diamond Necklace

Located in London, GB

. Surrounding these rubies are several shimmering rose cut diamonds above in a neat geometric frame before a

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Pearl, Ruby, Platinum

Rare Post-Medieval Diamond and Enamel Ring, circa 1550-1650
Rare Post-Medieval Diamond and Enamel Ring, circa 1550-1650

Rare Post-Medieval Diamond and Enamel Ring, circa 1550-1650

Located in London, GB

Rare Post-Medieval Diamond and Enamel Ring. Set with a square table cut diamond in a closed back

Category

16th Century Renaissance Antique Square Cut Diamond

Materials

Diamond, Enamel

Antique 23.50 Carat Garnet 0.28 Carat Diamond 18k Yellow Gold Brooch Circa 1890
Antique 23.50 Carat Garnet 0.28 Carat Diamond 18k Yellow Gold Brooch Circa 1890

Antique 23.50 Carat Garnet 0.28 Carat Diamond 18k Yellow Gold Brooch Circa 1890

Located in Jesmond, Newcastle Upon Tyne

in yellow gold. Garnet Quality Cut Square Faceted Content 23.50 carats Diamond Quality Color

Category

1890s Antique Square Cut Diamond

Materials

Diamond, Garnet, Yellow Gold

Antique Art Deco Platinum Old Emerald Cut Diamond Engagement Ring - GIA
Antique Art Deco Platinum Old Emerald Cut Diamond Engagement Ring - GIA

Antique Art Deco Platinum Old Emerald Cut Diamond Engagement Ring - GIA

Located in Great Neck, NY

square emerald cut diamond that comes with a GIA report. The diamond is set in a beautiful Art Deco

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Victorian Ruby and Diamond Navette Ring
Victorian Ruby and Diamond Navette Ring

Victorian Ruby and Diamond Navette Ring

Located in London, GB

cluster consisting of fifteen round faceted old cut diamonds fill the centre of face and and are contained

Category

19th Century Victorian Antique Square Cut Diamond

Materials

Diamond, Ruby, Gold, Yellow Gold

Augis Qu'hier Que Demain Ruby and Diamond Medallion Pendant
Augis Qu'hier Que Demain Ruby and Diamond Medallion Pendant

Augis Qu'hier Que Demain Ruby and Diamond Medallion Pendant

By A. Augis

Located in London, GB

striking design with a textured backdrop playing host to three square-cut rich red rubies. Above this trio

Category

1920s Antique Square Cut Diamond

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Edwardian Peridot and Diamond Platinum Brooch
Edwardian Peridot and Diamond Platinum Brooch

Edwardian Peridot and Diamond Platinum Brooch

Located in Banbury, GB

An Edwardian peridot and diamond brooch, of quatrefoil design, centered with a square-shaped

Category

Early 1900s British Edwardian Antique Square Cut Diamond

Materials

Diamond, Peridot, Platinum

Art Deco Sapphire and 7.58 Carat Diamond Platinum Bracelet
Art Deco Sapphire and 7.58 Carat Diamond Platinum Bracelet

Art Deco Sapphire and 7.58 Carat Diamond Platinum Bracelet

Located in Jesmond, Newcastle Upon Tyne

Quality Color Blue Cut Square Faceted Content 0.30 carat Diamond Quality Feature Diamond Color G Clarity

Category

1920s Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, Platinum

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Cartier 18 Karat Yellow Gold, Square Cut Diamond and Sapphire Bar Pin
Cartier 18 Karat Yellow Gold, Square Cut Diamond and Sapphire Bar Pin

Cartier 18 Karat Yellow Gold, Square Cut Diamond and Sapphire Bar Pin

By Cartier

Located in Red Bank, NJ

Channel Set Square Blue Sapphires & Diamonds. Each Sapphire Section Has 8 Stones, Diamond Section Has 7

Category

Early 20th Century Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Blue Sapphire, 18k Gold

7.00 Carat Old Miner, French Cut & Square Emerald Art Deco Platinum Pin
7.00 Carat Old Miner, French Cut & Square Emerald Art Deco Platinum Pin

7.00 Carat Old Miner, French Cut & Square Emerald Art Deco Platinum Pin

Located in New York, NY

, Emerald Cut and Square Cut Diamonds (75 Total); Hexagonal Emeralds

Category

Early 20th Century American Art Deco Antique Square Cut Diamond

Materials

White Diamond, Emerald, Platinum

RENE BOIVIN. A platinum and diamond lady's chevaliere ring
RENE BOIVIN. A platinum and diamond lady's chevaliere ring

RENE BOIVIN. A platinum and diamond lady's chevaliere ring

By René Boivin

Located in London, GB

Of geometric design, centring on a plaque of square-cut diamonds, to arched shoulders set with

Category

1930s French Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Art Deco French Large Diamond Platinum Brooch
Art Deco French Large Diamond Platinum Brooch

Art Deco French Large Diamond Platinum Brooch

Unavailable

W 1.66 in L 3.08 in

Art Deco French Large Diamond Platinum Brooch

Located in Paris, FR

Large brooch in platinum designed as belt buckle set with round and square cut diamonds, the center

Category

1920s French Art Deco Antique Square Cut Diamond

Materials

White Diamond, 18k Gold, Platinum

Pair of Art Deco Emerald and Diamond Rings.

Pair of Art Deco Emerald and Diamond Rings.

Located in London, GB

with a square-cut diamond and square-cut emerald respectively, to alternating lines of French-cut

Category

1930s American Art Deco Antique Square Cut Diamond

Materials

Diamond, Emerald, Platinum

Art Deco Platinum Diamond Eternity Band
Art Deco Platinum Diamond Eternity Band

Art Deco Platinum Diamond Eternity Band

Located in Narberth, PA

features 1.35ctw of baguette and square cut diamonds resting within a channel setting. The top and bottom

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Tiffany & Co. Set of Three Gemstone Gold Bracelets

Tiffany & Co. Set of Three Gemstone Gold Bracelets

By Tiffany & Co.

Located in Greenwich, CT

cut diamonds, one with rubies, one emralds and the other sapphires mounted in platinum. Total

Category

Late 19th Century Antique Square Cut Diamond

Materials

Blue Sapphire, Diamond, Emerald, Ruby, Platinum

1920s Art Deco .95 carat Diamond Sapphire Gold Engagement Ring
1920s Art Deco .95 carat Diamond Sapphire Gold Engagement Ring

1920s Art Deco .95 carat Diamond Sapphire Gold Engagement Ring

Located in Tampa, FL

): Sapphire (Natural) Weight: .33ct. apx. T.W. Color: Blue Clarity: Eye Clean Cut: Antique Square Cut Diamond

Category

1920s Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, 18k Gold

Loose Diamond, 0.93ct, GIA Certified, Square Modified Brilliant Cut
Loose Diamond, 0.93ct, GIA Certified, Square Modified Brilliant Cut

Loose Diamond, 0.93ct, GIA Certified, Square Modified Brilliant Cut

Located in Vienna, VA

Loose Diamond, 0.93ct, GIA Certified, Square Modified Brilliant Cut Loose Square Modified

Category

15th Century and Earlier Antique Square Cut Diamond

Materials

Diamond

18k Yellow Gold Full Cut Diamond Square Clip-On Earrings
18k Yellow Gold Full Cut Diamond Square Clip-On Earrings

18k Yellow Gold Full Cut Diamond Square Clip-On Earrings

Located in New York, NY

18K Yellow Gold Full cut Diamond Square Clip-on Earrings Diamond, Gold Earrings Stones: Full-cut

Category

Early 20th Century Antique Square Cut Diamond

Materials

Diamond, 18k Gold, Yellow Gold

Art Deco Square Baguette Cut Diamond Line Bracelet Bangle Circa 1925
Art Deco Square Baguette Cut Diamond Line Bracelet Bangle Circa 1925

Art Deco Square Baguette Cut Diamond Line Bracelet Bangle Circa 1925

Located in London, GB

Art Deco square baguette cut diamond line bracelet. The very slightly graduated diamonds are

Category

1920s American Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Art Deco Square Cut Sapphire with Diamonds Platinum Elegant Ribbon Bracelet
Art Deco Square Cut Sapphire with Diamonds Platinum Elegant Ribbon Bracelet

Art Deco Square Cut Sapphire with Diamonds Platinum Elegant Ribbon Bracelet

Located in New York, NY

Sapphires Weighing Approximately 2 Carats. Bracelet is further designed with numerous old cut diamonds

Category

1920s American Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, Platinum

Art Nouveau Square Emerald Rose Cut Diamond 14 Karat Yellow Gold Earrings
Art Nouveau Square Emerald Rose Cut Diamond 14 Karat Yellow Gold Earrings

Art Nouveau Square Emerald Rose Cut Diamond 14 Karat Yellow Gold Earrings

By Dario Ferrara

Located in Marcianise, IT

Rose Cut Diamonds. These Earrings have 0.52 Carats of Natural Square Cut Emeralds. These Earrings are

Category

Early 20th Century Italian Art Nouveau Antique Square Cut Diamond

Materials

Diamond, Emerald, 14k Gold, Yellow Gold, Sterling Silver

Art Deco Diamond Cocktail Ring Square Setting Old Cuts 18 Karat Gold Platinum
Art Deco Diamond Cocktail Ring Square Setting Old Cuts 18 Karat Gold Platinum

Art Deco Diamond Cocktail Ring Square Setting Old Cuts 18 Karat Gold Platinum

Located in Preston, Lancashire

square geometric setting set with 9 old cut diamonds of the highest quality. The old cut diamonds are

Category

1920s Unknown Antique Square Cut Diamond

Materials

Diamond, Gold, 18k Gold, Yellow Gold, Platinum

Antique Art déco carre cut sapphire and diamond ring
Antique Art déco carre cut sapphire and diamond ring

Antique Art déco carre cut sapphire and diamond ring

Located in Magdeburg, DE

transitional cut diamond, approx. 0.35 ct (F/ SI1) - Thirty-two single cut diamonds, approx. 0.42 ct total

Category

1920s German Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, 14k Gold, White Gold

Ruby Diamond Cross Necklace
Ruby Diamond Cross Necklace

Ruby Diamond Cross Necklace

Located in New York, NY

Exceptional emerald cut ruby cross with diamonds set in platinum. 1.25cts of rubies. Four diamonds

Category

Early 1900s American Antique Square Cut Diamond

Materials

Diamond, Ruby

Art Deco 3.05 Carat Old Cut Diamond Plaque Ring
Art Deco 3.05 Carat Old Cut Diamond Plaque Ring

Art Deco 3.05 Carat Old Cut Diamond Plaque Ring

Located in Essex, GB

The centrepiece of this majestic ring is a 1.50 carat square / cushion shaped old cut diamond

Category

Early 20th Century Antique Square Cut Diamond

Materials

Diamond, White Diamond, Platinum

Art Deco Ruby and Diamond Bracelet
Art Deco Ruby and Diamond Bracelet

Art Deco Ruby and Diamond Bracelet

Located in La Jolla, CA

Art Deco Ruby and Diamond Bracelet. This estate diamond and ruby bracelet is set in platinum and

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Ruby, Platinum

0.85 Carat Old European Cut Diamond and Emerald Ring
0.85 Carat Old European Cut Diamond and Emerald Ring

0.85 Carat Old European Cut Diamond and Emerald Ring

Located in Essex, GB

). Cut – Old European cut diamond with square step cut emeralds. Colour – J. Clarity – VVS2. Carat

Category

Early 20th Century Antique Square Cut Diamond

Materials

Diamond, Emerald, Platinum

Antique Old European Cut Natural Diamond 0.61 Ct Ring
Antique Old European Cut Natural Diamond 0.61 Ct Ring

Antique Old European Cut Natural Diamond 0.61 Ct Ring

Located in Austin, TX

natural diamonds that each measures 1.7 mm and two square brilliant princess cut natural diamonds that

Category

1920s American Art Deco Antique Square Cut Diamond

Materials

Diamond

Art Deco 3.05 Carat Old Cut Diamond Platinum Plaque Ring
Art Deco 3.05 Carat Old Cut Diamond Platinum Plaque Ring

Art Deco 3.05 Carat Old Cut Diamond Platinum Plaque Ring

Located in Theydon Bois, Essex

The centrepiece of this majestic ring is a 1.50 carat square / cushion shaped old cut diamond

Category

Early 20th Century Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Platinum Art Déco Bracelet, Diamonds, Sapphires
Platinum Art Déco Bracelet, Diamonds, Sapphires

Platinum Art Déco Bracelet, Diamonds, Sapphires

Located in Paris, IDF

A platinum Art Déco bracelet, made with geometrical motifs, enhanced with old and 8/8 cut diamonds

Category

1920s French Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, Platinum

Edwardian 18kt Platinum Onyx & Diamond Checkerboard Locket
Edwardian 18kt Platinum Onyx & Diamond Checkerboard Locket

Edwardian 18kt Platinum Onyx & Diamond Checkerboard Locket

Located in Narberth, PA

gold and platinum, and features an attractive checkerboard design. A pattern of square cut onyx stones

Category

1910s Edwardian Antique Square Cut Diamond

Materials

Diamond, Onyx, Gold, 14k Gold, Rose Gold, Platinum

Art Deco 2.00 Carat Sapphire and 1.00 Carat Carré Cut Diamond Ring
Art Deco 2.00 Carat Sapphire and 1.00 Carat Carré Cut Diamond Ring

Art Deco 2.00 Carat Sapphire and 1.00 Carat Carré Cut Diamond Ring

Located in Essex, GB

. Accompanied by an independent jewellery report from IGR (#30308558). Cut – Carré cut diamonds and square step

Category

Early 20th Century Antique Square Cut Diamond

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, 18k Gold, Rose Gold

Art Deco 14k "Emerald" & Diamond Line Bracelet
Art Deco 14k "Emerald" & Diamond Line Bracelet

Art Deco 14k "Emerald" & Diamond Line Bracelet

Located in Narberth, PA

 of the links feature a square-cut synthetic emerald, which are both held within milgrained bezel

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Emerald, Gold, 14k Gold, White Gold

Trefoil Earrings with 1.54 Carat Weight Cushion and Old Mine Cut Diamonds
Trefoil Earrings with 1.54 Carat Weight Cushion and Old Mine Cut Diamonds

Trefoil Earrings with 1.54 Carat Weight Cushion and Old Mine Cut Diamonds

Located in Brooklyn, NY

wires. The earrings feature dazzling square cushion cut diamonds (.66ct and .74ct) suspended from

Category

Early 20th Century Unknown Edwardian Antique Square Cut Diamond

Materials

Diamond, 14k Gold, 18k Gold

Victorian French 18k Emerald and Diamond Navette Ring
Victorian French 18k Emerald and Diamond Navette Ring

Victorian French 18k Emerald and Diamond Navette Ring

Located in Narberth, PA

center of the ring feature a 1.35ct square cut Colombian emerald. The vibrant green stone is held within

Category

1880s Victorian Antique Square Cut Diamond

Materials

Diamond, Emerald, Gold, 18k Gold, Yellow Gold

Art Deco 4.95 Carat Natural Ceylon Sapphire and Old Cut Diamond Ring
Art Deco 4.95 Carat Natural Ceylon Sapphire and Old Cut Diamond Ring

Art Deco 4.95 Carat Natural Ceylon Sapphire and Old Cut Diamond Ring

Located in Essex, GB

rubover set in rose gold. The cushion shaped stone is set in a square gallery, with twenty old cut

Category

Early 20th Century Antique Square Cut Diamond

Materials

Diamond, Sapphire, Blue Sapphire, Gold, 18k Gold, Yellow Gold, Platinum

1920s Art Deco 4.95 Carat Natural Ceylon Sapphire Old Cut Diamond Gold Ring
1920s Art Deco 4.95 Carat Natural Ceylon Sapphire Old Cut Diamond Gold Ring

1920s Art Deco 4.95 Carat Natural Ceylon Sapphire Old Cut Diamond Gold Ring

Located in Theydon Bois, Essex

rubover set in rose gold. The cushion shaped stone is set in a square gallery, with twenty old cut

Category

Early 20th Century Art Deco Antique Square Cut Diamond

Materials

Blue Sapphire, Diamond, 18k Gold, Platinum

Art Deco 18k/Platinum Diamond & Sapphire Soda-Tab Link Bracelet
Art Deco 18k/Platinum Diamond & Sapphire Soda-Tab Link Bracelet

Art Deco 18k/Platinum Diamond & Sapphire Soda-Tab Link Bracelet

Located in Narberth, PA

bead-set full cut diamonds. Overall, the diamonds have an approximate total carat weight of 2ctw, and

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, Gold, 18k Gold, White Gold, Platinum

Art Deco Sapphire and Diamond Brooch Pin
Art Deco Sapphire and Diamond Brooch Pin

Art Deco Sapphire and Diamond Brooch Pin

Unavailable

W 0.4 in L 2.56 in

Art Deco Sapphire and Diamond Brooch Pin

Located in DALLAS, TX

18k two-tone 3.2 carat total weight sapphire and .65 carat total weight diamond brooch pin. 65mm

Category

Early 20th Century Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, 18k Gold, White Gold, Yellow Gold

Bonato & Massoni 18k White and Rose Gold Amethyst, Diamond and Enamel Statement
Bonato & Massoni 18k White and Rose Gold Amethyst, Diamond and Enamel Statement

Bonato & Massoni 18k White and Rose Gold Amethyst, Diamond and Enamel Statement

Located in New York, NY

& Massoni Amethyst, Diamond, Enamel, Gold Jewelry Suite Stones: cut-cornered square amethysts weighing a

Category

Early 20th Century Antique Square Cut Diamond

Materials

Amethyst, Diamond, 18k Gold, Rose Gold, White Gold, Enamel

A Pair of White Gold Cufflinks with Diamonds
A Pair of White Gold Cufflinks with Diamonds

A Pair of White Gold Cufflinks with Diamonds

Unavailable

W 0.47 in L 0.47 in

A Pair of White Gold Cufflinks with Diamonds

Located in Berlin, DE

1920's 18 carats white gold square cufflinks with 16 single-cut diamonds with a total weight of

Category

Early 20th Century Antique Square Cut Diamond

Materials

Diamond, 18k Gold, White Gold

Antique 3 Stone Diamond and Sapphire Ring, in Filigree Setting
Antique 3 Stone Diamond and Sapphire Ring, in Filigree Setting

Antique 3 Stone Diamond and Sapphire Ring, in Filigree Setting

Located in BALMAIN, NSW

over set with 1 round brilliant cut Diamond square grain set each side with floral pierced out gallery

Category

Early 20th Century American Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, 14k Gold

Blue Sapphire and Diamond Ring
Blue Sapphire and Diamond Ring

Blue Sapphire and Diamond Ring

Located in Bellmore, NY

square halo of Old Mine cut Diamonds. Channel set in a square around the diamonds are calibrated cut

Category

Late 19th Century Unknown Victorian Antique Square Cut Diamond

Materials

Diamond, Sapphire, 14k Gold, Silver

Art Deco Sapphire Diamond platinum Ring

Art Deco Sapphire Diamond platinum Ring

Located in New York, NY

sapphire, within a border of square cut sapphires and circular-cut diamonds, mounted in platinum, circa

Category

1920s Unknown Antique Square Cut Diamond

Materials

Blue Sapphire, Diamond, Platinum

Art Deco Sapphire Diamond Ring
Art Deco Sapphire Diamond Ring

Art Deco Sapphire Diamond Ring

Located in ALTRINCHAM, GB

The pale blue oval sapphire weighs 2.60ct and is surrounded by square cut and 8-cut diamonds

Category

Early 20th Century French Art Deco Antique Square Cut Diamond

Materials

Diamond, Blue Sapphire, Platinum

Tavennes Lady's Platinum Diamond Manual Wind Wristwatch
Tavennes Lady's Platinum Diamond Manual Wind Wristwatch

Tavennes Lady's Platinum Diamond Manual Wind Wristwatch

Located in Potts Point, NSW

with a border of 28 old cut single cut diamonds. Square case. Circa 1925.

Category

1920s Swiss Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Tiffany & Co. Art Deco Diamond Platinum Cufflinks

Tiffany & Co. Art Deco Diamond Platinum Cufflinks

By Tiffany & Co.

Located in New York, NY

Diamond and platinum cufflinks in a geometric motif set with square single-cut diamonds weighing

Category

Early 20th Century Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Beautiful Art Deco Diamond and Emerald Band
Beautiful Art Deco Diamond and Emerald Band

Beautiful Art Deco Diamond and Emerald Band

Located in New York, NY

stripes of small square-cut and channel-set diamonds and emeralds in are in a platinum setting, with

Category

Early 20th Century Antique Square Cut Diamond

Materials

Diamond, Emerald, Platinum

Art Deco Onyx Sapphire Emerald Diamond Platinum Pendant
Art Deco Onyx Sapphire Emerald Diamond Platinum Pendant

Art Deco Onyx Sapphire Emerald Diamond Platinum Pendant

Located in Potts Point, NSW

cabochon cut oval emerald with 45 old cut diamonds, twelve square cut sapphires and four square onyx are

Category

1920s French Art Deco Antique Square Cut Diamond

Materials

Blue Sapphire, Diamond, Emerald, Onyx, Platinum

Art Deco Diamond Platinum Geometric Motif Double Clips Pin
Art Deco Diamond Platinum Geometric Motif Double Clips Pin

Art Deco Diamond Platinum Geometric Motif Double Clips Pin

Located in Chestnut Hill, MA

Platinum Art Deco Geometric motif clips and pin consisting of full cut, square and baguette

Category

1920s Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Art Deco Platinum, Sapphire, Diamond and Enamel Cufflinks
Art Deco Platinum, Sapphire, Diamond and Enamel Cufflinks

Art Deco Platinum, Sapphire, Diamond and Enamel Cufflinks

Located in Melbourne, Victoria

with square cut sapphires and diamonds Each segment measures 12.5 x 12.5mm. Sapphires 3 x 3 mm

Category

1920s American Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, 14k Gold, Platinum

Art Deco Diamond, Jade, and Black Onyx Lapel Watch
Art Deco Diamond, Jade, and Black Onyx Lapel Watch

Art Deco Diamond, Jade, and Black Onyx Lapel Watch

Located in San Francisco, CA

inches long, The elongated rectangular watch case is design around five central square Asscher-cut

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Jade, Onyx, Platinum

Art Deco 1920s Beautiful Diamond and Platinum Strap Bracelet
Art Deco 1920s Beautiful Diamond and Platinum Strap Bracelet

Art Deco 1920s Beautiful Diamond and Platinum Strap Bracelet

Located in New York, NY

; Square Cut and Round Diamonds approximately 28ct; Although unsigned feel this bracelet is certainly made

Category

1920s American Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Victorian 1.97 Carat Diamond Gold Platinum Cluster Engagement Ring
Victorian 1.97 Carat Diamond Gold Platinum Cluster Engagement Ring

Victorian 1.97 Carat Diamond Gold Platinum Cluster Engagement Ring

Located in Los Angeles, CA

ring centering a 1.97ct EGL certified Cushion Square Modified Brilliant Cut diamond graded Q-R color

Category

1890s Unknown Victorian Antique Square Cut Diamond

Materials

Diamond, Platinum, Yellow Gold

Antique 18 Karat Gold, Silver and Diamond Ring, 1940s
Antique 18 Karat Gold, Silver and Diamond Ring, 1940s

Antique 18 Karat Gold, Silver and Diamond Ring, 1940s

Located in Bologna, IT

, studded with rose cut diamonds. The head of the ring is held up by a stunning worked mounting, with

Category

Early 20th Century Antique Square Cut Diamond

Materials

Diamond, Gold, 18k Gold, Yellow Gold, Silver

Cartier Art Deco Ladies Rectangle Diamond Sapphire European Movement Watch
Cartier Art Deco Ladies Rectangle Diamond Sapphire European Movement Watch

Cartier Art Deco Ladies Rectangle Diamond Sapphire European Movement Watch

By Cartier

Located in Miami, FL

: Art Deco Metal: Platinum Metal Purity: 950 Stones: 44 Round Brilliant Cut Diamonds; 6 Square Sappire

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, Platinum

Edwardian 18kt / Platinum Diamond, Calibrated Ruby + Natural Pearl Necklace
Edwardian 18kt / Platinum Diamond, Calibrated Ruby + Natural Pearl Necklace

Edwardian 18kt / Platinum Diamond, Calibrated Ruby + Natural Pearl Necklace

Located in Narberth, PA

Square Cut calibrated rubies. The bead-set diamonds, weighing approximately 0.25ctw, and the 0.65ctw of

Category

1910s Unknown Edwardian Antique Square Cut Diamond

Materials

Diamond, Natural Pearl, Ruby, 18k Gold, Platinum, Mixed Metal

1920s Antique Art Deco 1.24 Carat GIA Asscher Diamond Platinum Engagement Ring
1920s Antique Art Deco 1.24 Carat GIA Asscher Diamond Platinum Engagement Ring

1920s Antique Art Deco 1.24 Carat GIA Asscher Diamond Platinum Engagement Ring

Located in Huntington, NY

Details Type Diamond Carat Weight 1.24ct Color H Clarity VS2 Cut Asscher Cut (Square Emerald Cut

Category

1920s Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Barcelona Football Club Tie Pin, Sapphires, Rubies & Diamond, French, circa 1910
Barcelona Football Club Tie Pin, Sapphires, Rubies & Diamond, French, circa 1910

Barcelona Football Club Tie Pin, Sapphires, Rubies & Diamond, French, circa 1910

Located in London, GB

. Set with diamonds, square cut Burma rubies and shaped sapphires, French import marks. Measures 13mm

Category

1910s French Edwardian Antique Square Cut Diamond

Materials

Diamond, Ruby, Sapphire, 18k Gold, Gold, Yellow Gold

Edwardian 1.62 Carat Light Cognac Navette Cluster Ring
Edwardian 1.62 Carat Light Cognac Navette Cluster Ring

Edwardian 1.62 Carat Light Cognac Navette Cluster Ring

Located in Theydon Bois, Essex

To put it frankly, this is awesome. The square cushion shaped old cut diamond in the centre is

Category

Early 20th Century Antique Square Cut Diamond

Materials

Diamond, Brown Diamond, 18k Gold, Platinum

A 0.55 Carat Signed Art Deco Dreicer Platinum & Black Onyx Bow  Brooch
A 0.55 Carat Signed Art Deco Dreicer Platinum & Black Onyx Bow  Brooch

A 0.55 Carat Signed Art Deco Dreicer Platinum & Black Onyx Bow Brooch

By Dreicer & Co.

Located in New York, NY

: 8.20g Composition: 0.55 Carats of Round Cut Diamonds; Square Cut and Pear Cut Black Onyx

Category

Early 20th Century American Art Deco Antique Square Cut Diamond

Materials

White Diamond, Onyx, Platinum

1930s Square Cut Diamond Platinum Eternity Band Ring
1930s Square Cut Diamond Platinum Eternity Band Ring

1930s Square Cut Diamond Platinum Eternity Band Ring

Located in Miami, FL

This square-cut diamond eternity band of alluring feminine aesthetic and classic design is

Category

1910s Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Platinum

Edwardian Era 2.04 Carat Square Cut Diamond Engagement Ring
Edwardian Era 2.04 Carat Square Cut Diamond Engagement Ring

Edwardian Era 2.04 Carat Square Cut Diamond Engagement Ring

Located in Los Angeles, CA

& fiiigree design. Featuring a center stone 2.04 Carat Square Emerald Cut Diamond. Accented with 12 Pave Set

Category

Early 20th Century Unknown Edwardian Antique Square Cut Diamond

Materials

Diamond, Platinum

Boucheron 1925 Art Deco Sapphire, Square Cut Diamond Platinum Dress Set
Boucheron 1925 Art Deco Sapphire, Square Cut Diamond Platinum Dress Set

Boucheron 1925 Art Deco Sapphire, Square Cut Diamond Platinum Dress Set

By Boucheron

Located in London, GB

rows of calibre-cut buff top sapphires and centred with four square step-cut diamonds set together in a

Category

1920s French Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, Blue Sapphire, 18k Gold, Platinum, Mixed Metal

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Rose Cut Diamond Solitare Gold Ring
Rose Cut Diamond Solitare Gold Ring

Rose Cut Diamond Solitare Gold Ring

Located in Cairo, EG

Large rose cut diamond diameter 10mm×8mm in octagon shape excellent spark white color no inclousion with total estimate diamond weight of 3.5 carats centered in 14k gold solitaire ri...

Category

Mid-20th Century Antique Square Cut Diamond

Spectacular French Art Deco Beaded 'Flapper' Evening Dress
Spectacular French Art Deco Beaded 'Flapper' Evening Dress

Spectacular French Art Deco Beaded 'Flapper' Evening Dress

Located in Sharon, CT

Black silk gauze, heavily embroidered with irridized paillettes creating swirling complex patterns highlighted with densely embroidered irridized flowers. The heavy ornamentation of ...

Category

1920s French Antique Square Cut Diamond

1990s Bob Mackie Size 10 Black Crepe Sexy 90s Vintage High Slit Evening Gown
1990s Bob Mackie Size 10 Black Crepe Sexy 90s Vintage High Slit Evening Gown

1990s Bob Mackie Size 10 Black Crepe Sexy 90s Vintage High Slit Evening Gown

By Bob Mackie

Located in San Diego, CA

Sexy, yet sophisticated 1990s BOB MACKIE black crepe bodycon evening dress! Features an elegant sweetheart neckline, with satin trim. Figure flattering silhouette that hugs the body ...

Category

1990s Antique Square Cut Diamond

La Perla vintage silk nightgown dress
La Perla vintage silk nightgown dress

La Perla vintage silk nightgown dress

By La Perla

Located in Алматинский Почтамт, KZ

La Perla vintage silk nightgown dress Size 3 Excellent condition, a couple of micro-spots, see photo

Category

1990s Antique Square Cut Diamond

Bulgari Turquoise, Sapphire & Diamond Earrings
Bulgari Turquoise, Sapphire & Diamond Earrings

Bulgari Turquoise, Sapphire & Diamond Earrings

By Bulgari

Located in New York, NY

Discover timeless elegance with these exquisite Bulgari Turquoise, Sapphire & Diamond Earrings. Each earring showcases a captivating center cabochon turquoise, beautifully framed by ...

Category

20th Century Italian Modern Antique Square Cut Diamond

Materials

Diamond, Sapphire, Turquoise, 18k Gold

Tiffany & Co Cabochon Emerald Brooch
Tiffany & Co Cabochon Emerald Brooch

Tiffany & Co Cabochon Emerald Brooch

By Tiffany & Co.

Located in New York, NY

Tiffany & Co Cabochon Emerald Brooch A Tiffany & Co. brooch that converts to a pendant, set with 12 round-cut diamonds and a cabochon emerald. Approximate Length: 1.50" Metal Type:...

Category

20th Century American Antique Square Cut Diamond

Materials

Diamond, Emerald, 18k Gold

Antique Fernch Floral  Diamond Platinum Wedding Tiara
Antique Fernch Floral  Diamond Platinum Wedding Tiara

Antique Fernch Floral Diamond Platinum Wedding Tiara

Located in Miami, FL

Antique French Floral Design Platinum Diamond Tiara with Detachable Brooch This magnificent French tiara, crafted in luxurious platinum, is a masterpiece of elegance and refinement....

Category

1940s French Retro Antique Square Cut Diamond

Materials

Diamond, Platinum

NARCISO RODRIGUEZ 2018 Silk Soft Pink/Peach Gown Maxi Dress
NARCISO RODRIGUEZ 2018 Silk Soft Pink/Peach Gown Maxi Dress

NARCISO RODRIGUEZ 2018 Silk Soft Pink/Peach Gown Maxi Dress

By Narciso Rodriguez

Located in Leonardo, NJ

Narciso Rodriguez 2018 Original Price $2,995 Special Capsule Collection for Barneys NY The most adorable softest baby pink color bordering on peach Pullover Lined 100% silk IT40 fits...

Category

2010s Antique Square Cut Diamond

Thierry Mugler S/S 2001 Coral Silk Slip Dress with Raffia Fringe
Thierry Mugler S/S 2001 Coral Silk Slip Dress with Raffia Fringe

Thierry Mugler S/S 2001 Coral Silk Slip Dress with Raffia Fringe

By Thierry Mugler

Located in Paris, FR

Silk slip dress Thierry Mugler coral featuring bias-cut construction with asymmetrical raffia fringe detailing. Crafted from lightweight silk in vibrant coral shade with fitted silho...

Category

Early 2000s French Antique Square Cut Diamond

Vintage A. Tillander Diamond Platinum Tiara
Vintage A. Tillander Diamond Platinum Tiara

Vintage A. Tillander Diamond Platinum Tiara

$46,939Sale Price|20% Off

H 1.78 in Dm 4.73 in

Vintage A. Tillander Diamond Platinum Tiara

Located in London, GB

An A. Tillander diamond platinum tiara, circa 1910. This exceptional diamond tiara by A. Tillander is beautifully handcrafted in platinum. The tiara is composed of intertwining, sc...

Category

1910s European Retro Antique Square Cut Diamond

Materials

Diamond, Platinum

Christian Lacroix Vintage Strapless Floral Print Mini Dress with Raffia, 1990s
Christian Lacroix Vintage Strapless Floral Print Mini Dress with Raffia, 1990s

Christian Lacroix Vintage Strapless Floral Print Mini Dress with Raffia, 1990s

By Christian Lacroix

Located in Sparks, NV

Incredible vintage Christian Lacroix strapless mini dress with a floral print and black raffia embroidered lace. Sexy iconic Lacroix! Fully lined with zip closure. The marked size is...

Category

1990s French Antique Square Cut Diamond

Gold evening slip dress with lace edge LOLITA LEMPICKA
Gold evening slip dress with lace edge LOLITA LEMPICKA

Gold evening slip dress with lace edge LOLITA LEMPICKA

By Lolita Lempicka

Located in Saint-Ouen-Sur-Seine, FR

Gold silk (74%) and polyester ( 26%) evening slip dress with lace edge. SIZE 42 (Fr) L

Category

1990s French Antique Square Cut Diamond

Azzedine Alaia F/W 1986 Jacket Skirt and Pants Suit
Azzedine Alaia F/W 1986 Jacket Skirt and Pants Suit

Azzedine Alaia F/W 1986 Jacket Skirt and Pants Suit

By Azzedine Alaïa

Located in Water Mill, NY

An amazing iconic fine black wool 3 piece skirt, pant and jacket suit from Azzedine Alaia as displayed in SCAD Fashion Museum in Atlanta. The spectacular front wrapping jacket is a...

Category

1980s French Antique Square Cut Diamond

Emilio Jewelry GRS Certified 7.50 Carat Burma No Heat Pigeon Blood Ruby Ring
Emilio Jewelry GRS Certified 7.50 Carat Burma No Heat Pigeon Blood Ruby Ring

Emilio Jewelry GRS Certified 7.50 Carat Burma No Heat Pigeon Blood Ruby Ring

By Emilio!

Located in New York, NY

From Emilio Jewelry, a well known and respected wholesaler/dealer located on New York’s iconic Fifth Avenue, Please inquire for more images, certificates, and details. Zoom meetings...

Category

21st Century and Contemporary Antique Square Cut Diamond

Materials

Ruby

Pale pink satin deshabillé with lace on the sleeve edge
Pale pink satin deshabillé with lace on the sleeve edge

Pale pink satin deshabillé with lace on the sleeve edge

Located in Saint-Ouen-Sur-Seine, FR

Pale pink satin deshabillé with lace on the sleeve edge and belt. Snap closure on the middle front + one ribbon inside SIZE L

Category

1940s Unknown Antique Square Cut Diamond

Vintage 1960's Ivory Organza and cream rayon evening dress UK 8 US 4
Vintage 1960's Ivory Organza and cream rayon evening dress UK 8 US 4

Vintage 1960's Ivory Organza and cream rayon evening dress UK 8 US 4

Located in Nashville, TN

A classic silhouette rendered in a cream rayon and ivory organza detailed collar, embellished with iridescent faceted glass beads, lace and clear glass bugle beads, this vintage 1960...

Category

1960s Antique Square Cut Diamond

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Antique Square Cut Diamond For Sale on 1stDibs

On 1stDibs, you can find the most appropriate antique square cut diamond for your needs in our varied inventory. Each design created in this style — which was crafted with great care and often made from Gold, 18k Gold and Platinum — can elevate any look. Making the right choice when shopping for an antique square cut diamond may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 18th Century and a newer version made as recently as the 20th Century, both of which have proven very popular over the years. There have been many well-made iterations of the classic antique square cut diamond over the years, but those made by NIBIRU Collection, Asprey London and Cartier are often thought to be among the most beautiful. Today, if you’re looking for a square cut version of this piece and are unable to find the perfect match, our selection also includes emerald cut and old european cut alternatives. Most of our antique square cut diamond for sale are for women, but there are 47 pieces available to browse for men.

How Much is a Antique Square Cut Diamond?

The price for an antique square cut diamond starts at $220 and tops out at $92,582 with these rings, on average, selling for $2,950.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement ringsvintage engagement rings or Art Deco engagement rings

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.