Platinum brooch 'bird' with black opal and brilliants

Antique black opal cameo set atop onyx set in platinum and 18kt white gold with diamonds. Width 1 3/8;; total weight 7.5 grams Condition: Two tight fissures in onyx at 12 and 6, perhaps intentional

A Platinum, Black Opal and Diamond Pendant, containing one oval cabochon cut black opal measuring approximately 29.00 x 21.00 x 8.84 mm and 52 round brilliant cut diamonds weighing approximately 5.00

Black opal surrounded by baguette and brilliant cut diamonds in a floral motif. Opal 6.24 carats, diamonds 1.79 ctw. Ring measures 7/8 x 1 x 1 1/4 T. Weight 14g. Excellent condition.

Opal and Diamond Ring. Speckled with blues and greens, this 8.15 carat black opal is prong set in a platinum ring with .18 carats of round, brilliant-cut, G-I color, SI1-SI2 clarity diamonds on the si

NO RESERVE - AN ANTIQUE BLACK OPAL AND DIAMOND BAR BROOCH, CIRCA 1910, Made in yellow gold and platinum, Oval cabochon black opal, weighing approximately 1.61 carats, Single cut and rose cut diamonds,

Vintage handmade Art Deco period Platinum and 18K Gold "Bar" brooch with black enamel, stamped "CDP Inc. France". A double row of (32) Round Brilliant Cut Diamonds, total weight 1.50ct, Clarity VS1, C

13.26 Carat Oval Cabochon Black Opal, 2.26 Carat TW Eighteen Round Brilliant Cut Diamond and Platinum Ring. Opal with very good play of multi color. Diamonds E-F color, VVS-VS clarity. Stamped Pt900.

Opal and Diamond Ring.  A .94 carat cabochon black opal is raised above a .78 carat round, brilliant-cut and baguette, G-I color, SI1-SI2 clarity diamond skirt on a platinum ring.  The ring

CARTIER, YELLOW GOLD AND DIAMOND BIRD BROOCH Consisting of a textured yellow gold bird with platinum accents containing 16 round brilliant cut diamonds weighing approximately 0.80 carat total and one

Raymond C. Yard Diamond Penguin Brooch platinum, the brooch mounted with round brilliant-cut diamonds weighing approximately 2.50 carats in total, accented with black enamel, stamped "YARD". size 1-1/

A Platinum, Yellow Gold, Diamond, Ruby, Sapphire and Emerald Bird of Paradise Brooch, containing 90 round brilliant and single cut diamonds weighing approximately 1.90 carats total, numerous round mix

14 Karat Yellow Gold, Opal & Gemstone Brooch/PendantCentering a white opal carved with bird motif measuring approximately 37.95 by 23.49 mm, featuring a pear shaped brilliant cut diamond weighing 0.22

NS SJ- UOOO Black Starr & Frost Diamond Horseshoe Pin / Brooch Classy, Unique and Charming! A perfect gift for the equestrian in your life, or for a brilliant accent of luck! Truly a beautiful piece t

Art Deco Platinum Black Opal & Diamond Pendant. It features a drop design centrally set with a massive pear shaped black opal. It exhibits a harlequin peacock play-of-color and measures 31.00mm x 21.0

A PLATINUM, BLACK OPAL AND DIAMOND RING Centering a black opal oval-shaped double cabochon weighing approximately 4.50 carats encircled by round and tapered baguette diamonds weighing approximately 1.

1970's Platinum Black Opal & Diamond Ring. The ring is centrally set with a large oval cabochon cut black peacock opal. It exhibits a fine blue to green harlequin play of color. It weighs approx. 5.99

METAL: Platinum. MEASUREMENTS: Ring size - 7.75, ring top is 15.6mm wide. GEMSTONES: Black opal - 15.6mm x 12mm x 5.1mm (stone has small chips/abrasions). Diamonds approx. 0.50ctw. MARKED: with polish

METAL: Platinum. GEMSTONES: Diamonds, Black opal - 25mm x 16.8mm. (opal has fine line scratches). MEASUREMENTS: Ring size 7. MARKED: LRW, PLAT. WEIGHT: 9.9 grams. Gemstones have not been graded for co

14K Yellow Gold Brooch with Black Opal diameter 1 1/2 inches, total weight 6.8 grams

LADIES PLATINUM DIAMOND BLACK OPAL COCKTAIL RING Ladies .900 Platinum diamond cocktail fashion ring with oval cut black opal center stone. Diamond carat weight total is approximately .40cts, opal meas

Metal : Platinum Designer : Not Signed Gemstone : GIA natural black opal - 1.88ct, measures 12.03 x 9.31mm. Diamonds 0.67ctw. Measurements : Ring size 6, top is 14mm x 16mm. Marked: : pt

Edwardian Era Platinum Topped 14k Gold Natural Black Opal Diamond Bar Pin Hardy Bros Brisbane Australia w/ Original Box Description: Genuine Edwardian Era long bar pin made in solid 14k gold with a pl

PGL Digital Appraisal Retail Replacement Value $13,995 Natural opal weighing 3.70 carats Natural Diamonds Carat Weight: 1.70Color Grade: H - I Clarity Grade: SI1 - SI2 Size 5.75 366869-2491 NOTE: PGL

PGL Digital Appraisal Retail Replacement Value $10,740 Natural opal weighing 15.91 carats Natural Diamonds Carat Weight: .13Color Grade: H-I Clarity Grade: SI1-SI2 Size 6.75 370710-2151 NOTE: PGL Appr