Platinum Diamond Onyx Round Ring

An 18 Karat Yellow Gold, Platinum, Onyx and Diamond Ring, Montreaux, unsigned, containing one round cabochon cut onyx measuring approximately 16.60 mm in diameter and 20 round brilliant cut diamonds w

Signed Cartier and Crafted in platinum featuring a round onyx ring and measuring 2 3/4in in length. The pin weighs 1.4dwt

This is a handsome men's ring, crafted from 14k yellow gold featuring a fancy grooved high tops bridge and shank. The top of the ring has a deep inset with a round polished onyx and a diamond attatche

This is a handsome men's ring, crafted from 14k yellow gold featuring a fancy grooved high tops bridge and shank. The top of the ring has a deep inset with a round polished onyx and a diamond attatche

A Platinum Topped Yellow Gold, Pearl, Diamond and Onyx Ring, containing a pearl measuring approximately 6.80 mm (origin of pearl not tested), two round brilliant cut diamonds, 16 round single cut diam

This is an interesting design ring, it is crafted from 18k yellow and white gold with a polished finish. It features a round top with polished black onyx disc with a quarter size pie shape spinner des

METAL: platinum GEMSTONE(S): round brilliant and single cut diamonds approx. 0.86 carat total, most H-I/SI2-I1; rectangular faceted onyx and emeralds MEASUREMENTS: 7/8 x 3/4 inch RING SIZE: 7-3/4 WEIG

Crafted in Platinum and 18k white gold. This David Webb ring consists of Carved Rock Crystal, Onyx, Diamonds and a South Sea Pearl. The pearl is 14mm and there are (26) round diamonds weighing approxi

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.

METAL: platinum GEMSTONE(S): center round brilliant cut diamond approx. 0.65 carat, H-I/SI1; accented with round brilliant cut diamonds, carved coral and onyx MEASUREMENTS: ring top 1-1/4 x 3/4 inches

Platinum Weight 8.5g Diamond Center Stone Approx. 0.52ct TW 0.85ct Coral Onyx Ring Size 7.5 Measurements 1"x0.8"

METAL: Platinum. MEASUREMENTS: Ring size - 7.5, ring top - 18mm in diameter. GEMSTONES: Onyx, Coral, Diamonds approx. 0.95ctw. TESTED: Plat. WEIGHT: 6 grams.Gemstones have not been graded for color an

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

Platinum Weight 4.03g Diamond Approx. 1ct Sapphire Approx. 1ct Round Ring Size 7 Measurements 0.68”x0.75”

METAL: 18k Gold/Platinum. GEMSTONES: Diamonds approx. 0.50ctw. Onyx. Enamel. MEASUREMENTS: Ring size 6, top is 25mm. TESTED: 18k Plat. WEIGHT: 14.4 grams.Gemstones have not been graded for color and c

Size 6 Striking 14kt/Platinum Onyx Ring with 1/2Carat Diamond

Art Deco Platinum Weight 6.7gr Sapphire Approx 1.5ct Emerald Approx 1ct Diamond Center Stone Si1 H Shoulders Approx 0.6ct TW 1.2ct Round Ring Size 7 Measurements 0.68”x0.76”

Art Deco platinum diamond ring. Round cut center stone flanked by four emerald cut diamonds. Approximately .75ct. Inscription to band "From BP to SK Oct. 3, 1926." Light scratches and abrasion to meta

Platinum Weight 12.4g Diamond Approx. 3ct Sapphire Approx. 0.60ct Round Cluster Ring Size 7 Measurements 0.79”x0.79”

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. 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

Antique platinum diamond ring, round brilliant central diamond (.50 ct), diamond bezel, filigree basket, six shoulder set round brilliant stones, marked size: 6.25 total weight: 3.1 grams Provenance

An outstanding AGL certified 6.11 carat colombian emerald that has the deep pure green color desirable in gem quality emeralds. Bezel set in an expertly handcrafted platinum ring creatively designed w

A Belle Époque diamond, platinum, and onyx ringcentering a bezel-set old European-cut diamond weighing approximately 1.00 carat, flanked by old European-cut diamonds weighing approximately 0.30 carat