Art Deco Platinum Diamond Onyx

* An Art Deco Platinum, Diamond, Onyx and Emerald Bar Brooch, French, containing 133 old European and round single cut diamonds weighing approximately 2.70 carats total, 36 calibre cut onyx, and eight

A French Art Deco Platinum Diamond and Onyx Jabot Pin. Arrow terminals set in platinum with single cut diamonds and onyx. French Hallmarks. Approximate total weight. 7.3 grams. Dimensions: length: 3 5

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

METAL: Platinum. MEASUREMENTS: Pendant is 38mm x 21mm. GEMSTONES: Onyx, Diamonds approx. 2.20ctw. TESTED: Plat. WEIGHT: 10.3 grams.Gemstones have not been graded for color and clarity ,and tested for

Art Deco Platinum Weight 9.9gr Full & Single Cut Diamonds Approx 0.8ct Vs1 H Measurements 2.7”x0.4”  Onyx Drop Earrings 

An Art Deco Platinum, Diamond and Onyx Line Bracelet, Boucheron, containing 25 old European cut diamonds weighing approximately 1.50 carats total and 25 rectangular step cut onyx. Engraved: BOUCHERON

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

This is an estate pair of earrings that was handmade in the Art Deco style from platinum with 18K closing levers. They are set with 8 brilliant cut diamonds (vertical line) of H color, SI clarity that

Bracelet is 6 7/8" long, center section is 18mm x 44mm. Set with approx. 1.00-1.10ctw diamonds and onyx links. Tested plat and 14k gold. Weight - 14.9 grams.Gemstones have not been graded for col

Art Deco dreicer & Co platinum bow brooch set with approx. 0.66ctw in rose cut diamonds and onyx. Some onyx stones are chipped. Brooch is 53mm x 12mm. Marked: Dreicer & Co, tested Platinum. Weight - 7

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

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

METAL: Platinum/ 14k Gold. MEASUREMENTS: Cufflink top - 13mm, in diameter, stud top - 13mm in diameter. GEMSTONES: Onyx, rose cut diamonds (a few stones are missing). TESTED: Plat top, 14k gold. WEIGH

Art Deco Platinum Weight 13.5gr Coral Onyx Diamonds Approx 1ct Measurements 2.4”x0.4” Earrings

Art Deco Platinum Onyx Coral European Cut Diamond Approx 2.2ct SI J Weight 7.7gr Measurements 1.8”x0.31” Earrings

Ladies Watch Case. Total approx. diamond weight of 1 cttw, approx. color G, approx. clarity VVS. From an extensive Brooklyn, NY collection. Dimensions: .625" w x 1.25". Condition: All watches sold as

18k Platinum Weight 4g Art Deco Diamond Approx. 0.5ct Onyx Pendant Measurements 0.86”x0.53” Chain 18.5”

Consisting of a pair of double cufflinks, together with three matching shirt studs, each featuring a concave onyx tablet centering one full-cut diamond set in platinum topped, 14k yellow gold mounti

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

Art Deco Platinum Rose Cut Diamonds Approx 1ct Onyx  Roman Medal Measurements 1.4”x1.1” 

JEWELRY: Platinum Art Deco diamond and onyx bracelet, hinged bracelet tested platinum with 18K white gold clap tongue, tapered width: 5.7mm-7.4mm, total weight: 24.8 grams, set with a total of twenty

Art Deco Tiffany & Co 14k gold and platinum jabot pin, adorned with lapis, onyx and diamonds. Each top is 10mm in diameter, entire pin is 76mm long. Marked Tiffany & Co. Weight - 4.6 grams.

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