18K Onyx and diamond ring by K Di Kuore

Antique 18K white gold ring with a spinning .65 carat European cut diamond (K color, SI clarity), set in black onyx. Size 7.5

METAL: 18K yellow and white gold GEMSTONE(S): onyx; round brilliant- and tapered baguette-cut diamonds approx. 3.10 carats total, most I-K/SI MEASUREMENTS: necklace length 18-1/8 inches, pendant 1-7/1

set with a center round onyx cabochon approx. 13mm (minor specks of glue residue at prong areas observed under magnification), accented with 42 round diamonds approx. 1.26 carats (according to certifi

18k Yellow Gold Weight 10.6g Onyx & Coral, Diamond Approx. 0.50ct Ring size 5.25

18k Yellow Gold, Onyx & Single Cut Diamond Ring. Ring size: 6. Measurements: 0.4"x0.9". Weight: 12.3g.

METAL: 18k gold. MEASUREMENTS: ring size - 6 1/4, ring top - 24mm x 13mm. GEMSTONES: onyx top, diamond in the center - approx. 0.15ct. TESTED: 18k. WEIGHT: 4.5 grams.Gemstones have not been graded for

METAL: 18k gold. MEASUREMENTS: ring size - 5 1/2, ring top is 24mm x 24mm. GEMSTONES: opal - 11.8mm x 11mm, onyx. diamonds - approx. 1.00-1.10ctw (one diamond is missing). TESTED: 18k. WEIGHT: 20 gram

A David Yurman 18K yellow gold Lexington Barrel Ring. An 18K yellow gold twist band with a faceted cabochon black onyx barrel, .08ctw of round white diamonds and cabochon ruby ends. Size 7. $1,600 Ret

18K yellow gold ring contains a central oval shaped carved cabochon onyx, approx. 2cts, set in a domed mount highlighting 6 bezel set brilliant cut diamonds, .30 cts. total, and a textured and ornate

18k yellow gold black onyx and diamond ring, twenty-eight diamonds, 15 mm across the top, stamped 750, ring size 7.25.

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

An 18K yellow gold ring with a center cut emerald (1.47 carats) accented by black onyx and 8 single cut diamonds. It is a size 6 and weighs 3.7 g

18K yellow gold onyx and diamond, three central stacked stones, inlaid onyx, marked size: 10.25 total weight: 12.1 grams Condition: one central stone is a CZ Provenance: Property from the estate of

An 18K white gold, art deco style fashion ring with a black onyx bezel and featuring four invisible set center diamonds of SI clarity and H-I color weighing approximately .20cttw. This very cool size

Vintage 18KT white gold ring with (3) round diamonds set in black onyx. Onyx measures 21 x 10 MM. Ornate filigree mounting. Size 6.5, weighs 5.3 grams.

Art Deco Onyx Diamond Approx 0.1ct 18k White Gold  Weight 6.72gr Measurement 0.3”x0.83” Ring Size 

Cast in 18 karat yellow gold, the barrel form set with black onyx bisected by a band of diamonds, hallmarked 18k, size 4.25, 5.5 g, condition: good. Low Estimate: 150 High Estimate: 300

18K Yellow Gold Gents Onyx & Diamond Ring, 4.31dwt, Size 9 1/2

Vintage18k gold lapis, onyx and diamond ring size 5. Weighs 1.7dwt From a noted jewelry collection Park Avenue New York

No Reserve Price! Grading Results: ___________ Stone Type: Onyx Shape: Taper Carat: 2 Pcs/ 0.50 ct Color: Black Grading Results: ____________ Stone Type: Natural Diamond Shape: Round Brilli

No Reserve Price!   Grading Results:___________Stone Type: Natural OnyxShape: CabochonCarat: 7 Pcs / 4.17 ctColor: BlackClarity: Opaque   Grading Results:___________

METAL: 18K gold. GEMSTONES: onyx, diamonds. MEASUREMENTS: ring size 7. Ring top is 21mm x 25mm at widest point. MARKED: Tous 750. WEIGHT: 19.7 grams. Gemstones have not been graded for color and clari

18kÊ White Gold Weight 32gr Diamond Approx. 3.5ctÊ VVS-G Onyx Frog Ring Size 8 Measurements 0.91Óx1.2Ó

Roberto Coin 1.00ctw VS1-VS2/G-H Diamond, 20.5mm Faceted Onyx Solid 18K Rose Gold Cocktail Ring - This beautiful ring was made by Roberto Coin, and was finely crafted of solid 18k rose gold. This ring