Art Deco Platinum Diamond Onyx Square Ring

METAL: platinum. GEMSTONES: diamonds-approx. 0.77ctw,onyx. MEASUREMENTS: ring size 8.25. Ring top is 16.2mm x16.2mm. MARKED: 900 Plat,100 Irid. WEIGHT: 5.38 grams.Gemstones have not been graded for co

METAL: Platinum. MEASUREMENTS: Ring size 7, top is 21mm x 17mm. GEMSTONES: Onyx, Diamonds approx. 0.40ctw, Citrine. MARKED: Punchmarks on the outside of the shank, 1216. WEIGHT: 10.2 grams.Gemstones h

An Art Deco Platinum, Rose Gold, Diamond and Onyx Ring, containing one triangular shape step cut diamond weighing approximately 1.20 carats within an onyx surround. 3.30 dwts. Estimate $2,000-3,000 Se

French Art Deco Platinum Weight 5.82g Onyx Diamond Ring Size 7 Measurement 0.91”x0.74”

Art Deco Style Platinum, Diamond, and Black Onyx Ringthe platinum navette shaped mount with milgrain detailing set to the center with three marquise cut diamonds weighing approximately .70 total carat

This is a gorgeous Art Deco ring, it is crafted from platinum featuring 9 square shape frame set in a square shape form, the center square has a 1.40ct round diamond, with smaller diamonds in each squ

METAL: platinum, 18k gold. GEMSTONES: diamonds, onyx. MEASUREMENTS: Ring size 7.5. MARKED: tested 18 and plat. WEIGHT: 2.3 grams. Gemstones have not been graded for color and clarity ,and tested for c

This fabulous Art Deco piece is finely crafted from platinum. It features sparkling diamonds, colorful blue sapphires, and a very well done onyx cameo depicting a knight. The metal content is stamped

An Art Deco Platinum, Emerald & Diamond Ring. Featuring a centered square-shape emerald weighing approximately 4.5 carats, surrounded by 12 old European-cut diamonds weighing approximately 0.70 carats

AN ART DECO ONYX AND DIAMOND RING in platinum, comprising a faceted onyx tablet set with an old cut diamond of 0.60 carats, the shoulders set with single cut diamonds and further inlaid onyx, no assay

Topped 18kt Gold Ring. Central Old European cut diamond weighing approx. 0.33 cttw, approx. color of I, approx. clarity of VS. Total approx. weight of rose cut diamond accents is 0.25 cttw. Total appr

3.6 grams. 5.5 sizable. The ring is set with a center round cut diamonds surrounded by four square cut rubies, and smaller diamonds on the filigree.

14k White Gold & Platinum Gram Weight: 6.6 Art Deco Black Onyx & Diamond Ring Size: 6.5

An Art Deco platinum emerald, sapphire and diamond ring. Of kite-shape outline, the square-shape emerald, with vari-cut diamond and triangular-shape sapphire geometric surround. Emerald weight 0.44ct.

Antique Art Deco 18k gold and Platinum Sapphire and Diamond Ring Description This lovely piece is truly a timeless Art Deco ring with 1 square cut natural sapphire that weighs 0.30ctw. With a band han

Art Deco Platinum  Weight 8.82g Onyx Euro Cut Diamonds Approx. 1.20ct VS1-H Rose Cut Diamond Approx. 0.2ct TW 1.40ct Ring Size 7.5 Measurements 0.45”x0.84”

Circa 1930's platinum ring, center bezel set round cabochon cut sapphire, approx. 4.10 ct., SI in Clarity (Type III), B in Hue, 8-9 in Tone, and 3 in Saturation. 4 square French cut diamonds , approx

A central 0.60ct diamond with square stepped diamond crown and shoulders. Platinum setting.This diamond is not professionally graded, however we will give it an amateur grade (inspected in the setting

Great looking Art Deco ring in 10K yellow gold. Ring with center (almost) square onyx with prong set diamond in a gold diamond shape setting. Marked inside band, appears to be EMI or FMI, 10K. Size 10

The square-cut emerald, approx. .39 ct. by formula, bezel-set within open form OEC diamond octagonal head, diamond shoulders, approx. 1.0 cts. TW. Ca. 1925. Size 6 1/4. 2.6 dwt.

ART DECO PLATINUM-ON-YELLOW GOLD, DIAMOND AND RUBY OBLONG RING. Old European cut round diamond weighing app. .45 ct. centered by pair square cut rubies, vertically set in rectangular panel with cante

UNUSUAL ART-DECO ONYX, DIAMOND AND ENAMEL RING,18 ct. gold and platinum.Diamonds bright and lively.Enamel in good condition.Size J 1/2.3.3 grams.

Round cabochon opal, 13.46 x 8.24 mm., approx. 8 cts., flanked by diamond volute shoulders with onyx bullets, tapered hoop with diamond accents, approx. .60 ct. TW, ca. 1938. Size 9 1/2. 7.7 dwt.

An Art Deco-style diamond and sapphire ring featuring 15 round diamonds and four square cut sapphires. Ring size 3-1/2. Setting is unmarked; tests as Platinum. 2.70 dwt.