5 days LeftLADYS 2.38 CTTW DIAMOND PLATINUM RING W/ G.I.A.Est. $5,000-$8,000$5,000Robert Slawinski Auctioneers, Inc.Carmel, CA
5 days LeftElsa Peretti for Tiffany & Co. Diamonds by the Yard Platinum and Diamond Drop EarringsEst. $2,250-$3,000$1,500Hampton Estate AuctionNew York, NY
3 days LeftVintage 1930s Art Deco French Signed Platinum Diamond BraceletEst. $103,363-$134,371$79,500Mynt AuctionsNew York, NY
Jul 10, 2026Art Deco Platinum Diamond Cross Pendant, early 20th c., App. Total Wt.- 7 grams, H.- 2 3/4 in., W.-Est. $800-$1,200$650Crescent City Auction GalleryNew Orleans, LA
4 days LeftGIA 5.03 Ct Oval Diamond Ring in Platinum and 18K White GoldEst. $49,699-$64,608$100(1 bid)Mynt AuctionsNew York, NY
5 days Left1960s Platinum Brooch with 9.60 Carat Diamonds by BirksEst. $8,944-$11,627$100Mynt AuctionsNew York, NY
3 days LeftDavid Webb 1980s Topaz Diamond Brooch Necklace Platinum 18K Yellow GoldEst. $32,032-$41,641$100Mynt AuctionsNew York, NY
3 days LeftDavid Webb 1964 Platinum 18K Yellow Gold Green Enamel Frog BroochEst. $16,549-$21,513$100Mynt AuctionsNew York, NY
5 days LeftPlatinum Diamond Engagement Wedding Rings. Size 4.75, Mine cut diamond. .75 SI1-2 J-K, wt. 5.4 gramsEst. $1,000-$2,000$500Bill Hood & Sons Art & Antique AuctionsDelray Beach, FL
Live NowPlatinum anchor cable link necklace 25 inch 6.8mm heavy chainEst. $23,790-$30,927$100BidhausNew York, NY
19 hrs LeftStunning Platinum Diamond Brooch 16.50 Ct F-H VVS-VSEst. $25,246-$32,819$14,750BidhausNew York, NY
2 days LeftArt Deco 14K/ Platinum Diamond Ring, 0.33 ct diamond, Sz. 7Est. $600-$1,200$300Circle AuctionKansas City, MO
Jul 05, 2026GIA Burma vivid red ruby platinum cocktail ring with 6 baguette diamondsEst. $9,620-$12,506$100BidhausNew York, NY
24 hrs LeftPLATINUM, 14K WHITE GOLD 3.50CT DIAMOND ART DECO BROOCHEst. $4,500-$18,000$4,500Robinhood AuctionsLas Vegas, NV
2 days LeftGIA Certified Platinum Round Brilliant Diamond Ring Size 4.5Est. $9,789-$12,725$100Mynt AuctionsNew York, NY
2 days LeftRachel Koen Colombian Emerald Diamond Cross Pendant Necklace in PlatinumEst. $25,324-$32,921$100Mynt AuctionsNew York, NY
4 days LeftPlatinum 18K White Gold 68 Diamond 8.80 Ct Necklace 19 InchesEst. $9,555-$12,421$100Mynt AuctionsNew York, NY
3 days LeftDavid Webb Checkmate 5.50ct Diamond Ring Platinum & 18K GoldEst. $33,735-$43,855$100Mynt AuctionsNew York, NY
3 days LeftTiffany & Co Platinum 1.71 ct Round Diamond Engagement Ring Size 6.5Est. $21,515-$27,969$100(1 bid)BidhausNew York, NY
5 days LeftDavid Webb Hammered Link Twist Chain Necklace Platinum 18K Gold 27 InchEst. $40,183-$52,237$100Mynt AuctionsNew York, NY
5 days LeftGIA Certified 4.11 Ct Natural Unheated Ceylon Blue Sapphire, Diamond & Platinum Ring by Isabel PerezEst. $3,500-$4,500$2,000Coral Gables AuctionCoral Gables, FL
5 days LeftArt Deco Platinum and Diamond Engagement Ring MountingEst. $375-$500$250(1 bid)Hampton Estate AuctionNew York, NY
5 days LeftDavid Webb Coral Emerald Sapphire Diamond Earrings Platinum GoldEst. $53,768-$69,898$100Mynt AuctionsNew York, NY