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Antique Square Cut Diamond

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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

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

Renaissance Ruby Diamond and Enamel Brooch
Renaissance Ruby Diamond and Enamel Brooch

Renaissance Ruby Diamond and Enamel Brooch

Located in London, GB

piece features a single table-cut diamond at the centre. This principal stone sits slightly risen whilst

Category

1680s Renaissance Antique Square Cut Diamond

Materials

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

Antique 1.60Ct Emerald, 4.22Ct Diamond and 12k Yellow Gold Brooch Pendant
Antique 1.60Ct Emerald, 4.22Ct Diamond and 12k Yellow Gold Brooch Pendant

Antique 1.60Ct Emerald, 4.22Ct Diamond and 12k Yellow Gold Brooch Pendant

Located in Jesmond, Newcastle Upon Tyne

square faceted cut emerald. The feature gemstone is encompassed with an inverted scalloped setting

Category

1890s Antique Square Cut Diamond

Materials

Diamond, Emerald, Yellow Gold, Silver

Art Deco Burma Ruby & Diamond Bracelet
Art Deco Burma Ruby & Diamond Bracelet

Art Deco Burma Ruby & Diamond Bracelet

Located in San Francisco, CA

gold Burma Ruby & Diamond Bracelet features 66 square cut unheated rubies weighing approximately 8.00

Category

Early 20th Century Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Ruby, Platinum

Antique 2.44 Carat Peridot and 0.18 Carat Diamond Platinum Ring Circa 1910
Antique 2.44 Carat Peridot and 0.18 Carat Diamond Platinum Ring Circa 1910

Antique 2.44 Carat Peridot and 0.18 Carat Diamond Platinum Ring Circa 1910

Located in Jesmond, Newcastle Upon Tyne

collet set 2.44ct square faceted cut peridot. The peridot is encompassed with a lobed quatrefoil frame

Category

1910s Antique Square Cut Diamond

Materials

Diamond, Peridot, Yellow Gold, Platinum

Tiffany & Co. Art Deco Ruby and Diamond Bracelet
Tiffany & Co. Art Deco Ruby and Diamond Bracelet

Tiffany & Co. Art Deco Ruby and Diamond Bracelet

By Tiffany & Co.

Located in New York, NY

Square rubies, round diamonds, platinum, signed Tiffany & Co. Diamonds: 60 round diamonds with

Category

Early 1900s American Art Deco Antique Square Cut Diamond

Materials

Diamond, Ruby

Antique Kunzite & Diamond Necklace/Brooch circa 1910
Antique Kunzite & Diamond Necklace/Brooch circa 1910

Antique Kunzite & Diamond Necklace/Brooch circa 1910

$48,389

H 0.87 in W 0.87 in L 9.06 in

Antique Kunzite & Diamond Necklace/Brooch circa 1910

Located in London, GB

frame of old mine cut diamonds, claw set in a millegrained platinum setting, suspended from an

Category

Early 20th Century British Antique Square Cut Diamond

Materials

White Diamond, Kunzite, Platinum

Antique Platinum, 1920s 9 Carat Aquamarine & Diamond Ring
Antique Platinum, 1920s 9 Carat Aquamarine & Diamond Ring

Antique Platinum, 1920s 9 Carat Aquamarine & Diamond Ring

Located in Brighton, GB

stunning Art Deco ring, expertly crafted from platinum. At its centre is an impressive square-cut

Category

Early 20th Century Edwardian Antique Square Cut Diamond

Materials

Aquamarine, Diamond, Platinum

Antique Circa 1920 Platinum Emerald 0.57ct & Diamond 1.20ct Ring
Antique Circa 1920 Platinum Emerald 0.57ct & Diamond 1.20ct Ring

Antique Circa 1920 Platinum Emerald 0.57ct & Diamond 1.20ct 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

Category

1920s Unknown Antique Square Cut Diamond

Materials

Diamond, Emerald, Platinum

Edwardian Emerald and Diamond Heart Pendant Necklace
Edwardian Emerald and Diamond Heart Pendant Necklace

Edwardian Emerald and Diamond Heart Pendant Necklace

Located in London, GB

triangular cut diamond sits at the centre of an double framed open heart consisting of square calibrated

Category

Early 20th Century Edwardian Antique Square Cut Diamond

Materials

Diamond, Emerald, Platinum

Art Deco Platinum Diamond and Emerald Ring, Circa 1920, Italy
Art Deco Platinum Diamond and Emerald Ring, Circa 1920, Italy

Art Deco Platinum Diamond and Emerald Ring, Circa 1920, Italy

Located in Firenze, IT

0,50ct square step cut diamond and two baguette brillant cut, and eight calibré cut emeralds on the sides

Category

1920s Italian Art Deco Antique Square Cut Diamond

Materials

Diamond, Emerald, Platinum

Ruby and Diamond Tassle Earrings, circa 1920
Ruby and Diamond Tassle Earrings, circa 1920

Ruby and Diamond Tassle Earrings, circa 1920

Located in London, GB

Ruby and diamond tassle earrings. A matching pair of earrings, each set with ten square and

Category

1920s Unknown Antique Square Cut Diamond

Materials

Diamond, Ruby, Yellow Gold, Platinum

Antique 0.65 Carat Diamond and Ruby Three-Stone Ring
Antique 0.65 Carat Diamond and Ruby Three-Stone Ring

Antique 0.65 Carat Diamond and Ruby Three-Stone Ring

Located in London, GB

faceted old European cut diamond which is flanked on either side by a vibrant pinky red ruby. All stones

Category

1910s Antique Square Cut Diamond

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Antique Edwardian 1910s 2.37 Carat Old Mine Cut Diamond Engagement Ring
Antique Edwardian 1910s 2.37 Carat Old Mine Cut Diamond Engagement Ring

Antique Edwardian 1910s 2.37 Carat Old Mine Cut Diamond Engagement Ring

Located in New York, NY

Finely crafted in 18K white gold with a GIA certified Old Mine cut Diamond weighing 2.37 carat, I

Category

1910s Edwardian Antique Square Cut Diamond

Materials

Diamond, Sapphire, 18k Gold

Art Nouveau Ruby Pearl and Diamond Bracelet
Art Nouveau Ruby Pearl and Diamond Bracelet

Art Nouveau Ruby Pearl and Diamond Bracelet

Located in London, GB

square calibrated rubies and rose cut diamonds set within tiny foliated motifs interspersed with lustrous

Category

1910s Art Nouveau Antique Square Cut Diamond

Materials

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

Antique 6.84 Carat Onyx, 15.40 Carat Diamond and Platinum Bracelet Circa 1920
Antique 6.84 Carat Onyx, 15.40 Carat Diamond and Platinum Bracelet Circa 1920

Antique 6.84 Carat Onyx, 15.40 Carat Diamond and Platinum Bracelet Circa 1920

Located in Jesmond, Newcastle Upon Tyne

thirty-eight channel set square faceted cut onyxes. The onyx pale to each link is flanked to the upper

Category

1920s French Antique Square Cut Diamond

Materials

Diamond, Onyx, White Gold, Platinum

Art Deco Ruby and Diamond Dress Ring
Art Deco Ruby and Diamond Dress Ring

Art Deco Ruby and Diamond Dress Ring

Located in London, GB

Here we have an Art Deco ring showcasing a striking geometric design. At the centre, a square-cut

Category

1920s Art Deco Antique Square Cut Diamond

Materials

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

Art Deco Emerald and Diamond Dress Ring
Art Deco Emerald and Diamond Dress Ring

Art Deco Emerald and Diamond Dress Ring

Located in London, GB

faceted old cut diamonds accompanied by layered bright white straight baguette cut diamonds at each

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Emerald, Gold, 18k Gold, White Gold

Edwardian 1.20ct Three Stone Diamond Ring, circa 1910s
Edwardian 1.20ct Three Stone Diamond Ring, circa 1910s

Edwardian 1.20ct Three Stone Diamond Ring, circa 1910s

Located in London, GB

Set in the centre of this Edwardian trilogy engagement ring is a carre cut diamond with a carat

Category

1910s Edwardian Antique Square Cut Diamond

Materials

Diamond, 18k Gold, Platinum

Art Deco 18KT Gold, Platinum, Emerald, Sapphire and Diamond Ring
Art Deco 18KT Gold, Platinum, Emerald, Sapphire and Diamond Ring

Art Deco 18KT Gold, Platinum, Emerald, Sapphire and Diamond Ring

Located in Braintree, GB

An Art Deco ring in 18KT gold with a platinum-topped setting, centred with a square-cut natural

Category

Late 19th Century Victorian Antique Square Cut Diamond

Materials

Diamond, Emerald, Blue Sapphire, 18k Gold

Edwardian Era Platinum, Silver, Emerald, Diamond, and Pearl Necklace
Edwardian Era Platinum, Silver, Emerald, Diamond, and Pearl Necklace

Edwardian Era Platinum, Silver, Emerald, Diamond, and Pearl Necklace

Located in Miami, FL

Mine Emeralds (EP-1, EP-7, EP-15) Cut: Antique rectangular and square Color: Medium vivid green Origin

Category

Early 20th Century Edwardian Antique Square Cut Diamond

Materials

Diamond, Emerald, Pearl, Platinum, Silver

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

Victorian Ruby and Diamond Navette Ring

Located in London, GB

. A mid section consisting of five old cut diamonds in a variety of cuts and sizes have been

Category

19th Century Victorian Antique Square Cut Diamond

Materials

Diamond, Ruby, Gold, 18k Gold

Antique Pearl, 2.02Ct Sapphire and 4.95Ct Diamond, 18k Yellow Gold Brooch
Antique Pearl, 2.02Ct Sapphire and 4.95Ct Diamond, 18k Yellow Gold Brooch

Antique Pearl, 2.02Ct Sapphire and 4.95Ct Diamond, 18k Yellow Gold Brooch

Located in Jesmond, Newcastle Upon Tyne

. Sapphire Quality Colour Blue Cut Square Faceted Content 2.02 carats Diamond Quality Colour (average grades

Category

1910s Antique Square Cut Diamond

Materials

Diamond, Pearl, Sapphire, Yellow Gold, Silver

Art Deco Mother of Pearl Sapphire and Diamond Tutankhamun Pendant Necklace
Art Deco Mother of Pearl Sapphire and Diamond Tutankhamun Pendant Necklace

Art Deco Mother of Pearl Sapphire and Diamond Tutankhamun Pendant Necklace

Located in London, GB

to the design. The outermost layer is adorned with a series of shimmering rose cut diamonds, each

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Pearl, Sapphire, Platinum

Art Deco 0.50ct Sapphire and Diamond Trilogy Ring, c.1920s
Art Deco 0.50ct Sapphire and Diamond Trilogy Ring, c.1920s

Art Deco 0.50ct Sapphire and Diamond Trilogy Ring, c.1920s

Located in London, GB

Dating back to the 1920s, this Art Deco trilogy ring features a square cut central sapphire flanked

Category

1920s European Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, Platinum

1.42 Carat Sapphire 0.60 Carat Diamond 18k Yellow Gold Bracelet Circa 1925
1.42 Carat Sapphire 0.60 Carat Diamond 18k Yellow Gold Bracelet Circa 1925

1.42 Carat Sapphire 0.60 Carat Diamond 18k Yellow Gold Bracelet Circa 1925

Located in Jesmond, Newcastle Upon Tyne

Blue Cut Square/Round Faceted Content 1.42 carats Diamond Quality Feature Diamond Color G Clarity VS1

Category

1920s Unknown Antique Square Cut Diamond

Materials

Diamond, Sapphire, Yellow Gold, Platinum

Art Deco 2.88 Carat Diamond Cluster Ring
Art Deco 2.88 Carat Diamond Cluster Ring

Art Deco 2.88 Carat Diamond Cluster Ring

Located in London, GB

backdrop consisting of smaller matching square stones at each corner and a straight baguette cut diamond

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Gold, 18k Gold, White Gold

1920 Art Deco Platinum Ring with 3.00 Cts in Diamonds and Rubies
1920 Art Deco Platinum Ring with 3.00 Cts in Diamonds and Rubies

1920 Art Deco Platinum Ring with 3.00 Cts in Diamonds and Rubies

Located in Aventura, FL

square-cut rubies and baguette diamonds are securely set in their original mountings, displaying the

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, White Diamond, Ruby, Platinum

French Art Deco Onyx and Diamond Bracelet
French Art Deco Onyx and Diamond Bracelet

French Art Deco Onyx and Diamond Bracelet

Located in London, GB

white diamonds. This supple 18ct white gold bracelet plays host to alternating trios of rectangular-cut

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Onyx, Gold, 18k Gold, White Gold

1910s Antique Pearl Ruby and Diamond Yellow Gold Brooch
1910s Antique Pearl Ruby and Diamond Yellow Gold Brooch

1910s Antique Pearl Ruby and Diamond Yellow Gold Brooch

Located in Jesmond, Newcastle Upon Tyne

Cut Square Content 0.55 carat Diamond Quality Color (average grades) H Clarity (average grades) P2

Category

1910s Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Pearl, Ruby, Yellow Gold, Platinum

Victorian Ruby and Diamond Cluster Ring
Victorian Ruby and Diamond Cluster Ring

Victorian Ruby and Diamond Cluster Ring

Located in London, GB

Here we have a delightful ruby and diamond ring from the Victorian era. This antique piece has been

Category

19th Century Victorian Antique Square Cut Diamond

Materials

Diamond, Ruby, Gold, Yellow Gold

Antique Art Deco Onyx Coral & Diamond Platinum Drop Earrings
Antique Art Deco Onyx Coral & Diamond Platinum Drop Earrings

Antique Art Deco Onyx Coral & Diamond Platinum Drop Earrings

Located in Santa Barbara, CA

ultimate color combo of rich, reddish coral, sleek black onyx, sparkling white diamonds and platinum, these

Category

1910s Art Deco Antique Square Cut Diamond

Materials

Coral, Diamond, Onyx, Platinum

Art Deco Emerald and Diamond Platinum Cluster Ring
Art Deco Emerald and Diamond Platinum Cluster Ring

Art Deco Emerald and Diamond Platinum Cluster Ring

Located in Chipping Campden, GB

emerald. The diamonds total approx 50pts and the classic square cut emerald measures approx 1.3carats

Category

1920s British Art Deco Antique Square Cut Diamond

Materials

Diamond, Emerald, Platinum

Antique Ruby and Diamond Eternity Ring Size N (54)
Antique Ruby and Diamond Eternity Ring Size N (54)

Antique Ruby and Diamond Eternity Ring Size N (54)

Located in London, GB

white old cut diamonds. A fine milgrain detailing borders these precious gemstones whilst the piece is

Category

Early 20th Century Antique Square Cut Diamond

Materials

Diamond, Ruby, Platinum

Art Deco 0.32 Carat Emerald, 6.13 Carat Diamond and Platinum Bracelet Circa 1910
Art Deco 0.32 Carat Emerald, 6.13 Carat Diamond and Platinum Bracelet Circa 1910

Art Deco 0.32 Carat Emerald, 6.13 Carat Diamond and Platinum Bracelet Circa 1910

Located in Jesmond, Newcastle Upon Tyne

connecting square links are each embellished with a stunning feature Old European round cut diamond, flanked

Category

1910s Unknown Art Deco Antique Square Cut Diamond

Materials

Diamond, Emerald, Platinum

Antique Circa 1890 9k Yellow Gold Ruby Diamond Horseshoe Brooch
Antique Circa 1890 9k Yellow Gold Ruby Diamond Horseshoe Brooch

Antique Circa 1890 9k Yellow Gold Ruby Diamond Horseshoe Brooch

Located in Jesmond, Newcastle Upon Tyne

diamond and ruby pin in the UK. Ruby Quality Cut Square Content 0.30 carat Diamond Quality Color

Category

1890s Unknown Antique Square Cut Diamond

Materials

Diamond, Ruby, 9k Gold, Yellow Gold

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

Italian Art Deco Weingrill Sapphire Diamond Clip Buckle Bangle18 KT
Italian Art Deco Weingrill Sapphire Diamond Clip Buckle Bangle18 KT

Italian Art Deco Weingrill Sapphire Diamond Clip Buckle Bangle18 KT

By Carlo Weingrill

Located in Napoli, IT

punch Gems: 19 Swiss cut diamonds totaling approx .40 Ct – 24 square faceted cut blue Synthetic

Category

1920s Italian Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, 18k Gold

Antique 0.32 Carat Emerald and Diamond, 15k Yellow Gold Ring Circa 1925
Antique 0.32 Carat Emerald and Diamond, 15k Yellow Gold Ring Circa 1925

Antique 0.32 Carat Emerald and Diamond, 15k Yellow Gold Ring Circa 1925

Located in Jesmond, Newcastle Upon Tyne

anterior setting is ornamented with a feature 0.32ct square faceted cut emerald, millegrain decorated

Category

1920s Antique Square Cut Diamond

Materials

Diamond, Emerald, Yellow Gold, Silver

Art Deco Emerald and Diamond Necklace / Pendant
Art Deco Emerald and Diamond Necklace / Pendant

Art Deco Emerald and Diamond Necklace / Pendant

Located in New York, NY

Platinum, Emerald and Diamond Necklace with detachable pendant, featuring cut cornered square

Category

Early 20th Century British Art Deco Antique Square Cut Diamond

Materials

Diamond, Emerald, Platinum

Antique Victorian 18K Gold Diamond & Ruby Enamel Repousse Work Bangle Bracelet
Antique Victorian 18K Gold Diamond & Ruby Enamel Repousse Work Bangle Bracelet

Antique Victorian 18K Gold Diamond & Ruby Enamel Repousse Work Bangle Bracelet

Located in Montclair, NJ

scroll repousse work, and is adorned with royal blue enamel and set with old cut diamonds and square step

Category

1890s Victorian Antique Square Cut Diamond

Materials

Diamond, Ruby, 18k Gold, Enamel

Victorian diamond sapphire cameo 18k yellow gold necklace
Victorian diamond sapphire cameo 18k yellow gold necklace

Victorian diamond sapphire cameo 18k yellow gold necklace

Located in Beverly Hills, CA

, the pendant is richly detailed and remarkably elegant in scale. Fifty delicate rose cut diamonds

Category

Early 1900s Victorian Antique Square Cut Diamond

Materials

Diamond, Sapphire, Gold, 14k Gold, 18k Gold, Yellow Gold

Antique Platinum-topped 14K Gold, Sapphire, & Diamond Ring
Antique Platinum-topped 14K Gold, Sapphire, & Diamond Ring

Antique Platinum-topped 14K Gold, Sapphire, & Diamond Ring

Located in Philadelphia, PA

. Comprised of a central square emerald-cut ca. 0.45± ct. sapphire (Transparency: Transparent, Color Hue: Blue

Category

Early 20th Century Unknown Edwardian Antique Square Cut Diamond

Materials

Diamond, Sapphire, 14k Gold, Platinum

Antique Crystal, 0.14 Carat Emerald, 0.58 Carat Diamond 18k Yellow Gold Brooch
Antique Crystal, 0.14 Carat Emerald, 0.58 Carat Diamond 18k Yellow Gold Brooch

Antique Crystal, 0.14 Carat Emerald, 0.58 Carat Diamond 18k Yellow Gold Brooch

Located in Jesmond, Newcastle Upon Tyne

example of Victorian jewelry. Emerald Quality Cut Square Faceted Content 0.14 carat Diamond Quality

Category

1880s Antique Square Cut Diamond

Materials

Crystal, Diamond, Emerald, Yellow Gold, Silver

Art Nouveau Ruby Diamond and Enamel Locket Pendant
Art Nouveau Ruby Diamond and Enamel Locket Pendant

Art Nouveau Ruby Diamond and Enamel Locket Pendant

Located in London, GB

circular shape and set with a centralised cluster of milgrain set rose cut diamonds and square calibrated

Category

Early 1900s Art Nouveau Antique Square Cut Diamond

Materials

Diamond, Ruby, Gold, Yellow Gold, Enamel

Antique Art Deco Platinum Yogo Gulch Sapphire Old Euro Diamond Bar Pin - GIA
Antique Art Deco Platinum Yogo Gulch Sapphire Old Euro Diamond Bar Pin - GIA

Antique Art Deco Platinum Yogo Gulch Sapphire Old Euro Diamond Bar Pin - GIA

Located in Great Neck, NY

and six white old European cut diamonds. The pin comes with a GIA report stating the origin of the

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, Platinum

Art Deco Sapphire and Diamond Platinum Eternity Band
Art Deco Sapphire and Diamond Platinum Eternity Band

Art Deco Sapphire and Diamond Platinum Eternity Band

Located in Chipping Campden, GB

This sweet diamond and blue sapphire eternity has the stones set within the platinum band. The

Category

1910s British Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, Platinum

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

Art Deco 0.70ct Sapphire and Diamond Cluster Ring, c.1920s
Art Deco 0.70ct Sapphire and Diamond Cluster Ring, c.1920s

Art Deco 0.70ct Sapphire and Diamond Cluster Ring, c.1920s

Located in London, GB

A lovely Art Deco sapphire and diamond cluster ring which dates back to the 1920s. The central

Category

1920s Art Deco Antique Square Cut Diamond

Materials

Diamond, Sapphire, Platinum

Edwardian 0.65 Carat Diamond and Ruby Ring
Edwardian 0.65 Carat Diamond and Ruby Ring

Edwardian 0.65 Carat Diamond and Ruby Ring

Located in London, GB

a rich 18ct yellow gold, this antique piece showcases a single round faceted old mine cut diamond at

Category

1910s Edwardian Antique Square Cut Diamond

Materials

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

1920s Emerald and Diamond Yellow Gold Cocktail Ring
1920s Emerald and Diamond Yellow Gold Cocktail Ring

1920s Emerald and Diamond Yellow Gold Cocktail Ring

Located in Jesmond, Newcastle Upon Tyne

0.24Ct square step cut natural emerald and an Old European round cut diamond, displayed vertically in

Category

1920s German Antique Square Cut Diamond

Materials

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

Vintage Red Agate and Diamond Filigree Ring of 14k Gold
Vintage Red Agate and Diamond Filigree Ring of 14k Gold

Vintage Red Agate and Diamond Filigree Ring of 14k Gold

Located in Lewisburg, PA

diamonds. The contrast between the warm agate and the shimmer of diamonds epitomizes the elegance and

Category

Early 20th Century Art Deco Antique Square Cut Diamond

Materials

Agate, Diamond, 14k Gold

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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.