Square Antique Diamond Rings

This antique square-shaped ring, likely dating to the late Georgian to early Victorian period (circa 1820s-1840s), features a bezel-set, square-cut Colombian emerald in a closed-back...

Experience timeless elegance with this beautiful vintage emerald and diamond ring. Crafted with 14k yellow gold, this ring features a square cut emerald weighing approximately 0.80 c...

A platinum ring set with four old cut diamonds in a square each set in a mille griffe border with on each side a sloped triangle set with three diamonds (app. 0.7 carat), with a beau...

A platinum ring set with four old-cut diamonds in a square.

This striking Art Deco inspired square target ring captures the bold geometry and refined contrast that define the glamour of the 1920’s.

Age: Antique Era: Art Deco Era, Circa 1920 Primary Stone: Emerald Primary Stone Weight: 0.77 Carats Primary Stone Cut: Square Cut Secondary Stone: Diamonds Secondary Stone Weight: ...

The setting measures 6.5 mm / .25 inch square. This stylish and classic diamond ring is circa 1920s.

Antique Square Engagement Ring 18ct Gold Stamped Circa 1910 Pretty Little Deco Diamond Engagement Ring.

Age: Antique Era: Art Deco Era, Circa 1920 Primary Stone: Diamond Primary Stone Weight: Approx. 1.40-Carats Primary Stone Cut: Old European Cut Primary Stone Color: J Color Primary ...

A beautiful square setting filled with natural calibrated rubies & a centre circle of natural, sparkling diamonds.

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

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

Antique Diamond Ring 18ct Yellow Gold & Platinum Tested Circa 1910 Introducing a stunning piece from the Edwardian era, this fabulous square-shaped ring features approximately 2...

Age: Antique Era: Art Deco Era, Circa 1920 Primary Stone: Diamond Primary Stone Weight: Approx. 1.40-Carats Primary Stone Cut: Old European Cut Primary Stone Color: J Color Primary ...

-- Stone(s):-- (2) Natural Genuine Diamond - Old European Cut - Prong Set - Very Nice White Brilliant Diamonds - 0.45ctw (approx.) (32) Natural Genuine Diamond - Old European & Old S...

Elegant and finely detailed Edwardian era diamond & ruby square ring crafted in 14 karat rose gold (circa 1900s to 1910s).

This Art Deco square cluster ring exudes the style and design of the era.

Finely detailed vintage Art Deco diamond & ruby square ring (circa 1920s to 1930s) crafted in 900 platinum.

Elegant Finely detailed Vintage Art Deco Diamond Gold Square Top Cocktail Ring. Securely Hand set with .85tcw Diamonds.

You will truly "go green" with this extraordinary AGL and Gubelin certified Colombian untreated 2.78 carat square cut emerald ring attributed to the most ancient of mines.

Antique Sapphire and Diamond Target Ring 18ct Gold Circa 1910 Step back in time with this stunning Edwardian-era ring, beautifully crafted in 18ct gold.

Vintage Engagement Ring 18ct White Gold Stamped Hallmarked Birmingham 1938 Makers Mark G P Behold this exquisite vintage 18ct white gold engagement ring adorned with a stunning ...

Circa Art Deco era, this stunning ring features a central natural reddish pink ruby, surround by very sparkling, F-G colour natural diamonds, and set on a square/cushion-shaped plaqu...

Finely crafted in platinum and 18k yellow gold with an Asscher cut Diamond, accenting Emeralds, and a halo of Old European cut Diamonds weighing approximately a total of 0.80 carats....

Here we have a truly beautiful ruby and diamond navette ring dating back to the Victorian period.

Antique Emerald & Diamond Shield Ring in Platinum This antique ring is crafted in 900 platinum and features green emeralds totaling 0.40ctw, arranged in a shield-style design wi...

Antique Emerald & Diamond Shield Ring in Platinum This antique ring is crafted in 900 platinum and features a striking shield-style design with richly colored green emeralds tot...

**Other Details:** Primary Stone: Sapphire Center Sapphire Weight: Approximately 0.80 Carats Center Sapphire Cut: Carré Cut Accent Stone: Diamond Total Diamond Weight: Approx. 3...

Condition: Used (Very Good) Weight: 8.6 grams Ring Size: I (48) - Resizable Band Width: 2mm - 1.5mm Aquamarine Weight: Approx. 10.00ct Total Diamond Weight: Approx. 0.44ct Diamond De...

Here we have a gorgeous antique ruby and diamond navette ring dating back to the Victorian period.

Here we have a delightful ruby and diamond ring from the Victorian era. This antique piece has been crafted from 15ct yellow gold and plays host to a graduating array of square calib...

Emerald Quality; Color Green Cut Square faceted Content 0.57 carat Dimensions 4.71mm x 4.60mm x 3.41mm Diamond Quality: Color (average grades) G Clarity (average grades) SI2 Cut Old...

Condition: Used (Very Good) Weight: 9.7 grams Ring Size: N (54) - Resizable Band Width: 1.5mm Face Dimensions: 20mm x 10mm Total Emerald Weight: Approx. 2.50ct Total Diamond Weight: ...

Here we have an Art Deco ring showcasing a striking geometric design. At the centre, a square-cut red ruby is prominently set, surrounded by a series of perfectly matched triangular ...

This stunning, fine and impressive antique diamond ring has been crafted in platinum. The pierced decorated setting is embellished with a four-claw set antique 1.36ct square step cu...

Antique Aquamarine Ring Platinum Circa 1920s Step into the elegance of the 1920s with this stunning Art Deco ring, expertly crafted from platinum.

This beautiful Edwardian emerald and diamond cluster ring is an elegant antique design from the 1910’s, centered by a square cut emerald weighing approximately 0.30 carat.

Rare Post-Medieval Diamond and Enamel Ring. Set with a square table cut diamond in a closed back bezel setting, to an exceptional solitaire design featuring intricate enamel detailin...

Here we have a delightful ruby and diamond gypsy ring taken from the Edwardian period.

A striking Art Deco emerald and diamond ring, centred on a certified 3.31 carat Colombian emerald of vivid green hue, framed by two concentric octagonal borders of sparkling old-cut ...

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

Emerald Quality Color Natural Cut Square Step Content 0.24 carat Dimensions 3.70mm x 3.45mm x 2.38mm Diamond Quality Color (average grades) G Clarity (average grades) P1 Cut Old Eur...

Ring Size: 6.5 This stunning Art Deco-era Cartier engagement ring features a striking 4.64 carat square emerald cut diamond at its center, set in a crisp, high-polish platinum sett...

A fine, antique sapphire and diamond cocktail ring. In 14 karat yellow gold with platinum-topped elements.

Here we have an elegant antique ruby and diamond full eternity ring. The band here has been crafted from platinum and plays host to alternating trios of square calibrated pink rubies...

Reflections in photographs may detract from the true representation of this fine example of antique emerald jewelry. Emerald Quality Cut Square Faceted Content 0.32 carat Dimensions...

On the hand, it reads as a refined statement piece rather than a large ring. Dimensions: Weight: 5.9 grams Ring Size: UK F–G / US 3–3.5 / EU 44–45 Specifications: Era / Period: Art...

Rare late 17th century seven stone diamond cluster finger ring of bow form from the Iberian Peninsula. This cluster ring is set with 7 table-cut deep diamonds totaling almost 1 cara...

Reflections in photographs may detract from the true representation of this fine example of peridot jewelry. Peridot Quality Cut Square Faceted Content 2.44 carats Dimensions 7.30mm...

Date Circa 1920 __________________________________ Metal Platinum Stone Diamond: approx o.6ct ...

This gorgeous and very well kept antique engagement ring was crafted in solid platinum during the art deco period and features a stunning, approximately 0.52 carat old European cut d...

Striking in both color and composition, this Art Deco ring (circa 1920s) showcases a rich, deep orange-red agate, gracefully framed by lace-like filigree detailing and accented with ...

Elegant antique French diamond eternity ring (circa 1900s to 1910s). Antique table cut square diamonds total an estimated 0.87 carats (estimated at H-I color VS2-SI2 clarity).

Mauboussin Burmese ruby and diamond ring. Set to centre with a rectangular step cut natural unenhanced Burmese ruby in an open back rubover setting with an approximate weight of 0.91...

This spectacular Art Deco ring showcases the era's bold geometric design, crafted in lustrous platinum and featuring 8 gem-quality square-cut rubies totaling 1.60 carats, dramaticall...

A total of 0.32 carat of old cut diamonds surround the central stone in a square cluster.

This ring holds one sapphire measuring 35pts and the diamond total is 14pts. The glossy gold band is modelled in 18ct gold and the stones are set in platinum. Ring Size: N or 6 3/4 ...