FeaturedSave6 hrs LeftArt Deco Diamond, Sapphire, Platinum Bracelet SHeritage Auctions4.2(578)Est. US$2,400-US$3,600US$1,600(2 bids)
FeaturedSave6 hrs LeftLeCoultre Art Nouveau Diamond, Platinum Watch CHeritage Auctions4.2(578)Est. US$1,600-US$2,400US$1,000
FeaturedSave6 days LeftBuhre: A diamond and platinum wristwatch, circa 1950,length 6 5/8in (17cm)Andrew Jones Auctions4.7(229)Est. US$1,500-US$2,500US$750
FeaturedSave6 hrs LeftArt Deco Diamond, Synthetic Sapphire, Platinum RHeritage Auctions4.2(578)Est. US$1,600-US$2,400US$1,000(1 bid)
SaveApr 13, 2026CARTIER London 1960 Gipsy Ring In Platinum With Burmese Ruby & DiamondsPlatinum Auction Group4.3(75)Est. US$33,540-US$41,925US$5,000
SaveApr 13, 2026J.E. CALDWELL 1910 Edwardian Brooch In Platinum With Diamonds & SapphirePlatinum Auction Group4.3(75)Est. US$11,982-US$14,977US$1,000
SaveApr 13, 2026CARTIER Art-Deco 1938 Certified Necklace In Platinum With Diamonds & SapphiresPlatinum Auction Group4.3(75)Est. US$31,800-US$39,750US$5,000
SaveApr 13, 2026ART DECO 1925 Stations Necklace Chain In .900 Platinum With European Cut DiamondsPlatinum Auction Group4.3(75)Est. US$5,700-US$7,125US$900
Save2 days LeftTiffany & Co. 2.50ctw Diamond and Platinum RingGWS Auctions Inc.4.5(288)Est. US$16,000-US$17,000US$4,000(4 bids)
Save1 day LeftROLEX DAY WATCHES PT950 PLATINUM WATCHNY Elizabeth 4.2(111)Est. US$163,350-US$239,580US$10,500(6 bids)
Save2 hrs LeftPlatinum Sapphire and Diamond NecklaceBodnar's Auction Sales4.5(667)Est. US$10,000-US$15,000US$140(4 bids)
Save21 hrs LeftBVLGARI Platinum 18K Emerald Diamond Chandelier Earrings AGL Certified 32.00 CtwMynt Auctions4.4(853)Est. US$489,177-US$635,930US$105(2 bids)
FeaturedSaveStarts Mar 2625ct Royal Blue Lab Sapphire & Natural Diamonds Brooch pin Platinum 12237**Chairish Auctions4.5(10.4k)Est. US$8,000-US$10,000US$3,000
FeaturedSave6 hrs LeftDiamond, Platinum Brooch Stones: Transitional aHeritage Auctions4.2(578)Est. US$1,600-US$2,400US$1,000
FeaturedSave4 days LeftTiffany & Co. Platinum Wedding Ring SetHarrington's Auctioneers & Appraisers4.5(36)Est. CA$4,000-CA$9,600CA$70(3 bids)
FeaturedSaveApr 26, 2026David Webb 18k Gold, Platinum and Diamond Enamel Pendant NecklaceSJ Auctioneers4.5(200)Est. US$6,000-US$7,000US$4,000
Save3 days LeftESTATE ART DECO PLATINUM, 7.400CTTW DIAMOND & SAPPHIRE BRACELETAustin Auction Gallery4.7(1.2k)Est. US$10,000-US$15,000US$8,000
Save2 days LeftPlatinum, Diamond, Ruby Bracelet, Tiffany & CoJ. James Auctioneers & Appraisers4.4(219)Est. US$7,000-US$14,000US$3,500
Save5 days LeftPlatinum Ring 3 stones Diamonds comes with Certificate GIA and AppraisalAuction Wallstreet4.6(72)Est. US$110,000-US$160,000US$100,000
SaveLive NowTiffany & Co. Art Deco Platinum Royal Blue Sapphire Diamond Ring GIA CertifiedMynt Auctions4.4(853)Est. US$20,553-US$26,718US$350(4 bids)
Save5 days LeftART DECO, EMERALD, DIAMOND, AND PLATINUM RINGFreeman's4.4(1.7k)Est. US$1,000-US$2,000US$700(3 bids)
Save6 days LeftArt Deco Platinum GIA Certified Diamond Emerald Ring 4.57 Ct Diamond 7.50 Ct EmeraldMynt Auctions4.4(853)Est. US$210,678-US$273,881US$110(3 bids)
Save1 day LeftEdwardian Platinum, Diamond and Synthetic Blue Sapphire Ring, Circa 1910Weschler's4.3(5)Est. US$6,000-US$8,000US$3,000(1 bid)
Save1 day LeftPlatinum and Diamond Bracelet, Gross weight: 17.3 dwt., Length: 7 in (17.7 cm)Weschler's4.3(5)Est. US$25,000-US$30,000US$12,000(1 bid)
FeaturedSave6 hrs LeftDiamond, Platinum, Gold Convertible Brooch StonHeritage Auctions4.2(578)Est. US$2,400-US$3,600US$1,500
FeaturedSaveEnds in 1d 8hGIA Fancy Yellow Marquise Diamond Halo Engagement Ring Platinum 1.99 CTWChairish Auctions4.5(10.4k)Est. US$15,000-US$18,000US$6,000
FeaturedSaveEnds in 1d 6hCurved Diamond Wedding Band Ring Platinum, Size 6.25Chairish Auctions4.5(10.4k)Est. US$2,000-US$2,500US$750
FeaturedSaveEnds in 1d 6hRound Diamond Eternity Ring Wedding Band Platinum, Size 3.5, 1.74 CTWChairish Auctions4.5(10.4k)Est. US$3,500-US$4,000US$1,500
Save2 hrs LeftOscar Friedman Platinum Opal, Emerald and Diamond Pendant with ChainBodnar's Auction Sales4.5(667)Est. US$1,500-US$3,000US$275(10 bids)
Save3 days Left1960s Platinum Earrings With 8 Carat Diamond and Coral AccentsMynt Auctions4.4(853)Est. US$14,781-US$19,215US$105(2 bids)
Save2 hrs Left[LINCOLN, Abraham (1809-1865)]. HESLER, Alexander (1823-1895), photographer. Platinum photograph ofFreeman's4.4(1.7k)Est. US$1,500-US$2,500US$850(2 bids)
Save1 day LeftArt Deco Platinum, Blue Sapphire and Diamond Bracelet, Total weight of diamonds: 12 carats, GrossWeschler's4.3(5)Est. US$10,000-US$15,000US$5,000
Save2 hrs LeftPlatinum Emerald and Diamond RingBodnar's Auction Sales4.5(667)Est. US$4,000-US$6,000US$425(6 bids)
Save21 hrs LeftGIA Certified 5.71 Ct Fancy Yellow Diamond Ring in Platinum & 18K GoldMynt Auctions4.4(853)Est. US$85,020-US$110,526US$245(3 bids)
Save2 hrs LeftPlatinum Sapphire and Diamond RingBodnar's Auction Sales4.5(667)Est. US$1,000-US$2,000US$110(5 bids)
Save1 day LeftPlatinum and Diamond Eternity Ring, Gross weight: 5.7 dwt., Shank size: 6-1/4Weschler's4.3(5)Est. US$12,000-US$15,000US$6,000
FeaturedSaveEnds in 5d 7hPT950 Platinum Ruby RingChairish Auctions4.5(10.4k)Est. US$20,000-US$30,000US$16,000
FeaturedSaveEnds in 5d 11hPlatinum Marquise Diamond and Natural Emerald RingChairish Auctions4.5(10.4k)Est. US$10,000-US$12,000US$3,800
FeaturedSaveEnds in 1d 5hTapered Baguette Diamond Engagement Ring Setting Mounting Platinum .30 CTWChairish Auctions4.5(10.4k)Est. US$1,500-US$2,000US$600
FeaturedSave6 hrs LeftDiamond, Platinum, Palladium, White Gold, WhiteHeritage Auctions4.2(578)Est. US$3,200-US$4,800US$2,000