Boivin brooch Yellow Gold and Platinum Square Diamonds

Art Deco 18 Karat Yellow Gold, Platinum, Diamond and Ruby Bar Brooch Bezel set on the diagonal with four square French cut Diamonds [G/VVS], approximate total weight 2.05 carats, and enhanced with 16

Crafted of fine 18k yellow gold with a platinum flash on the face. Features alternating clusters of small rose cut diamonds and square single cut sapphires in a graduated arrangement, placing the larg

Estate 18kt yellow gold (tested) brooch, thirty-eight square-cut, channel-set red stones (synthetic), twenty-seven diamonds in platinum-topped setting, two bezel-set diamond and pearl drops, approx 1

These stylish and artfully designed ruby and diamond brooch, c 1940, is crafted in platinum and 14K yellow gold. The center circle is adorned with 22 square-cut rubies weighing collectively approx. 1.

Cartier ‘Lovers on a Bench’ brooch. 18k yellow gold, platinum, coral, and diamonds. Overall size 29 x 17mm. Two heart-shaped red corals surrounded by 20 rose-cut diamonds in a platinum set

Floral brooch in 18k yellow gold and platinum featuring diamonds and various multi colored gemstones. It is 41mm x 31mm and weighs 17 grams. In excellent condition. Please review all photos closely. C

AN 18K YELLOW GOLD, PLATINUM, DIAMOND AND RUBY HUMMINGBIRD AND FLOWER BROOCH • 18k yellow gold and platinum • 24 single-cut diamonds and 1 pear-shaped diamond weighing approximately 0.40 c

VK ITOO DAVID WEBB 18 karat Yellow Gold Platinum Diamond Emerald Brooch A gorgeous vintage David Webb 18 karat gold brooch, featuring emerald and diamond. Designed as a swirled branch, this vintage Da

DAVID WEBB, YELLOW GOLD, PLATINUM AND DIAMOND BROOCH Containing two heart shaped, 26 baguette and 87 round brilliant and single cut diamonds weighing approximately 7.00 carats total. 2 3/8 x 2 inches.

An 18 Karat Yellow Gold, Platinum and Diamond Brooch, containing 15 round brilliant cut diamonds weighing approximately 0.75 carat total. Stamp: H 18K. 15.10 dwts.

Verdura "Target" Diamond, Platinum, 18k Yellow Gold Brooch. Designed as arrows in a bull's-eye, featuring round brilliant-cut diamonds weighing a total of approximately 1.60 cttw., set in a platinum a

Art Deco Bug brooch Crafted in 18k yellow Gold and Platinum, set with Diamonds, Two Round Shaped Rubies and a 8mm Round Pearl. Weight: 5.6g. Measurements: 1.4x0.8".

Tiffany & Co. Schlumberger Apollo Pave Diamond Platinum Yellow Gold Pin Brooch Comes with C.O.A. ! Brand: Tiffany & Co. Collection: Schlumberger Style: Pin Brooch Condition: Pre-owned Diamond: 8 TCW M

OSCAR HEYMAN & BROTHERS, YELLOW GOLD, PLATINUM AND DIAMOND FOX BROOCH Containing 27 round brilliant cut diamonds weighing approximately 0.80 carat total and two ruby eyes. 1 inch x 1 1/4 inches. Stamp

Diamond, Platinum, 18k Yellow Gold Spray Brooch. Featuring ninety-seven full-cut diamonds weighing a total of approximately 4.50 cttw., set in a platinum, 18k yellow gold textured spray motif mounting

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

Vintage Diamond, Platinum, 14k Yellow Gold Bow Brooch. Designed as an open work bow with black velvet backing, the center featuring one old European-cut diamond weighing approximately 0.30 ct., accent

An 18 Karat Yellow Gold, Platinum and Diamond Ring, containing five square step cut diamonds weighing approximately 0.50 carat total. Stamp: 18K. 9.50 dwts. Estimate $ 300-500

An 18 Karat Yellow Gold, Platinum and Diamond Squiggle Brooch, Paloma Picasso for Tiffany & Co., Circa 1983, containing 11 round single cut diamonds. Stamp: Paloma Picasso 1983 TIFFANY&CO 18K PLAT. 5.

David Webb 8.00ctw VVS2-VS1/F-G Diamond Solid Platinum/18K Yellow Gold Brooch - This stunning brooch was made by David Webb and was finely crafted of solid platinum and 18k yellow gold. The brooch off

JEWELRY: Edwardian Pearl & Diamond Circle Brooch, tested 18K yellow gold and platinum Edwardian circle brooch with diamond bow. Consisting of 22 pearls set into the circle portion of the brooch, measu

Fourteen karats yellow gold and platinum. diamond set horse pin. The pin consists of a horse atop a platinum base accented with a total of twenty-four round brilliant cut diamonds. The pin secures wit

14KT YELLOW GOLD, PLATINUM AND DIAMOND ART DECO-DESIGN BROOCHNine round-cut diamonds approx. 0.55 ctw. Approx. 50.0 x 11.0mm.Approx. 3.75 total dwt.

AN EXQUISITE BELLE EPOQUE PINK TOPAZ AND DIAMOND BROOCH in yellow gold and platinum, set to the centre with a cushion cut pink topaz of approximately 7.35 carats, within two concentric borders of old