Jul 16, 202618K Yellow Gold Platinum Diamond Wedding RingEst. $600-$800$325Auctions at ShowplaceAstoria, NY
4 days Left1.11CT. PLATINUM ART DECO FILIGREE ENGAGEMENT RING NATURAL OLD MINE CUT DIAMONDEst. $7,225-$8,075$5,900Modern JewelryValley Village, CA
6 hrs LeftArt Deco Platinum Diamond Clips by Wedderien with Old Mine DiamondsEst. $16,276-$21,158$9,500BidhausNew York, NY
4 days LeftVINTAGE PLATINUM 18K GOLD ENGAGEMENT RING 3.48CT.NATURAL OVAL ROSE CUT DIAMONDEst. $48,875-$54,625$40,250Modern JewelryValley Village, CA
4 days LeftPLATINUM VINTAGE FILIGREE ENGAGEMENT RING 0.78CT. NATURAL EURO CUT ROUND DIAMONDEst. $3,995-$4,465$3,250Modern JewelryValley Village, CA
4 days LeftPLATINUM VINTAGE ENGAGEMENT RING CUSHION CUT DIAMOND 0.80CT I-SI1 GIA CERT.Est. $4,165-$4,655$3,400Modern JewelryValley Village, CA
Jul 08, 2026Oscar Friedman Platinum Kashmir Pink Sapphire and Diamond Halo Ring, GIA CertifiedEst. $2,000-$3,000$800Coral Gables AuctionCoral Gables, FL
Jul 13, 2026LARGE Antique Victorian Platinum and Diamond Bar Pin 5"H x 5/16"WEst. $1,500-$2,500$600Ripley AuctionsIndianapolis, IN
Jul 08, 2026Diamond, Sapphire & Platinum Dress Shirt SetEst. $1,500-$2,000$750Kodner Galleries Inc.Dania Beach, FL
4 days LeftPLATINUM VINTAGE ENGAGEMENT RING 1.52CT. NATURAL OLD EURO CUT ROUND DIAMONDEst. $13,515-$15,105$11,000Modern JewelryValley Village, CA
10 hrs LeftDavid Webb Estate Ring Platinum 18K Gold Turquoise Diamond 21.5 CtsEst. $78,221-$101,687$100BidhausNew York, NY
Jul 08, 2026GIA Certified 2.64 Ct Blue Sapphire and Diamond Platinum RingEst. $2,000-$3,000$850(2 bids)Coral Gables AuctionCoral Gables, FL
5 days LeftDiamond Necklace 81.00 Carats Old Mine 18K White Gold Platinum 17 InchEst. $188,942-$245,624$100BidhausNew York, NY
Jul 08, 2026Deco Diamond & Platinum Pendant / BroochEst. $2,000-$3,000$1,000Kodner Galleries Inc.Dania Beach, FL
9 hrs LeftPlatinum and Diamond Bypass Pendant with CGL Grading ReportEst. $10-$100,000$60(3 bids)Gallery 63Atlanta, GA
3 days LeftTiffany & CO. Platinum Diamond Bubble Drops EarringsEst. $14,000-$16,000$13,000Auction Plus, Inc.Costa Mesa, CA
4 days LeftGIA Fancy Intense Yellow Cushion Diamond Pink Halo Platinum RingEst. $42,861-$55,719$24,000BidhausNew York, NY
2 days Left1940's Platinum Floral Bracelet with 75ct Green Emeralds and 22ct DiamondsEst. $79,586-$103,461$100BidhausNew York, NY
Jul 08, 2026Oscar Friedman Platinum Tanzanite and Diamond RingEst. $2,500-$3,000$1,100(2 bids)Coral Gables AuctionCoral Gables, FL
9 hrs LeftE-VVS2 Platinum Diamond Solitaire Ring with Diamond Gallery AccentsEst. $10-$100,000$10Gallery 63Atlanta, GA
Jul 10, 2026Platinum Diamond Band, App. Total Diamond W.t- 0.68 carats, App. Total Wt.- 5.4 grams, Size- 5.Est. $800-$1,200$650Crescent City Auction GalleryNew Orleans, LA
1 day LeftGIA Platinum Black Opal Diamond Cocktail Ring Size 6.5Est. $4,862-$6,320$100Mynt AuctionsNew York, NY