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
1910s Edwardian Antique Square Cut Diamond
Diamond, Onyx, Platinum
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
Diamond, Onyx, Platinum
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
Diamond, Platinum
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
Diamond, Emerald, Platinum
$49,500
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
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
Diamond, Emerald, 18k Gold, White Gold
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
Diamond, White Diamond, Gold, 18k Gold, White Gold, Yellow Gold
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
Diamond, Platinum
Vintage 1920s Diamond Set Silver Dial Platinum Cocktail Wristwatch
Located in Mayfair, London, London
platinum bezel set with approximately 16 round cut diamonds, approximately 8 square cut diamonds and 4
Diamond, Platinum
Antique Edwardian Diamond Calibre Ruby Ring 14k Gold Platinum Sz 5.5 Engagement
Located in Torrance, CA
diamond is accented with a further estimated 0.15 carat old square cut diamonds. The total diamond weight
Diamond, White Diamond, Ruby, Gold, 14k Gold, Yellow Gold, Platinum
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
Diamond, Platinum
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
Diamond, Platinum
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
Diamond, Platinum
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
Diamond, Emerald, 14k Gold, Yellow Gold
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
Diamond, Ruby, Platinum
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
White Diamond, Diamond, Platinum
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
Diamond, Ruby, Gold, 18k Gold, Yellow Gold
$12,480Sale Price|20% Off
Square Cut Emerald Halo Ring (Approx. 0.70-Carats) with Diamonds, Platinum
Located in New York, NY
that define the era. At its center sits a captivating approx 0.70-carat square-cut emerald, set
Diamond, Emerald, Platinum
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
Emerald, White Diamond, Platinum
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
Agate, Diamond, Quartz, Turquoise, Yellow Gold
Antique 1.77ct Diamond, Enamel and Platinum Horse and Huntsman Brooch
Located in Jesmond, Newcastle Upon Tyne
European, eight and square cut diamonds, in a combination of collet and pavé settings. This horse brooch
Diamond, Platinum, Enamel, White Gold
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
Diamond, Emerald, 18k Gold, Platinum
Art Deco Diamond Square Cut Cabochon Blue-Green Opal 18K White Gold Pendant
Located in New York, NY
Fine Art Deco diamond, square cut cabochon blue-green opal and 18K white and yellow gold pendant
Diamond, Opal, 18k Gold, White Gold
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
Diamond, 18k Gold
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
Diamond, White Diamond, Platinum
$1,160Sale Price|20% Off
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
White Diamond
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
Diamond, Sapphire, White Gold, Platinum
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
Diamond, Emerald, Platinum
Victorian 0.46 CTW Emerald & Rose Cut Diamond Halo Ring in 14K Yellow Gold
Located in Boston, MA
-cut diamonds of 0.06ctw, graded G color and SI1 clarity. Ring measures 9.0 mm in width and 5.0 mm in
Diamond, Emerald, 14k Gold, Yellow Gold
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
Diamond, Platinum
Antique Art Deco 14K Green Gold Carre Step Cut Diamond Engagement Ring - GIA
Located in Great Neck, NY
Beautiful Antique Art Deco 14K Green Gold Carre Step Cut Diamond Engagement Ring - GIA. This
Diamond, Gold, 14k Gold
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
Diamond, White Gold
Edwardian Platinum and Gold Bracelet with Rose Cut Diamonds and Ruby - VHK#1006
Located in Hicksville, NY
Edwardian Platinum and Gold Bracelet with Rose Cut Diamonds and Ruby - VHK#1006 Item Details: Year
Diamond, Ruby, Gold, 14k Gold, Yellow Gold, Platinum
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
Diamond, Gold, 18k Gold, Yellow Gold, Platinum
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
Diamond, Sapphire, Gold, 14k Gold, White Gold
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
Diamond, Platinum
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
Diamond, Ruby, Gold, 18k Gold
$736Sale Price|20% Off
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
White Diamond
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
Crystal, Bronze
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
Diamond, White Diamond, Ruby, Platinum
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
Diamond, Platinum
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
Diamond, 18k Gold
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
Diamond, Platinum
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
Diamond, Platinum
Art Deco Geometric Carré Cut Diamond Platinum Band
Located in Santa Barbara, CA
Carré cut diamonds; square shapes that are skillfully and precisely matched to a tea. The attention to
Diamond, Platinum
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
Diamond, Sapphire, 18k Gold
Art Deco Colombian Emerald and Diamond Three-Stone Ring
Located in London, GB
bright white transitional cut diamonds. The emerald is a chunky square shape, providing a striking
Diamond, Emerald, Platinum
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
Diamond, Ruby, 14k Gold, White Gold, Yellow Gold
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
Diamond, Sapphire, Platinum
Art Deco Onyx and Diamond Bracelet
Located in London, GB
Deco period. The bracelet features a striking combination of square-cut black onyx and round faceted
Diamond, Onyx, 18k Gold, White Gold
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
Diamond, Garnet, Yellow Gold
Antique Emerald 1.20 Carat Diamond Platinum Ring
Located in Jesmond, Newcastle Upon Tyne
ornamented with a feature collet set 0.57ct square cut emerald. The feature emerald is flanked to the upper
Diamond, Emerald, Platinum
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
Diamond, Pearl, Ruby, Platinum
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
Diamond, Enamel
Art Deco Diamond And Emerald Ring c.1920
Located in Firenze, IT
0,50ct square step cut diamond and two baguette brillant cut, and eight calibré cut emeralds on the sides
Diamond, Emerald, Platinum
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
Diamond, Platinum
Art Deco 0.75ct Diamond Brooch, c.1920s
Located in London, GB
three carre cut diamonds, each weighing 0.25 carat each. Spreading out from the centre three, additional
Diamond, Platinum
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
Diamond, Platinum
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 rings, vintage engagement rings or Art Deco engagement rings.
Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.