FeaturedSave6 days LeftKieselstein Cord Platinum 2.5ct Diamond Golden Citrine Cockatil Ring 1999 sz 6.5Chairish Auctions4.5(10.3k)Est. US$12,000-US$14,000US$9,000
FeaturedSaveEnds in 3d 1hVintage Platinum Diamond Art Deco Ring, Sz. 6.25, CertifiedChairish Auctions4.5(10.3k)Est. US$1,500-US$2,000US$1,400
FeaturedSave6 days LeftCartier 18k White Gold Platinum Diamond Emerald Zodiac Pisces Fish Brooch PinChairish Auctions4.5(10.3k)Est. US$17,000-US$20,000US$13,000
FeaturedSave6 days LeftAuthentic! Tiffany & Co Platinum Diamond Garland BraceletChairish Auctions4.5(10.3k)Est. US$12,000-US$14,000US$9,000
SaveFeb 18, 2026ART DECO 1920 Platinum Cocktail Ring With 26.65 Cwt. In Sapphires And DiamondsPlatinum Auction Group4.3(68)Est. US$19,985-US$21,985US$2,000(1 bid)
SaveFeb 18, 2026DAVID WEBB 1977 South Seas Pearls Clips-On Earrings Platinum And 8.84 Cwt DiamondsPlatinum Auction Group4.3(68)Est. US$59,950-US$65,945US$5,750
SaveFeb 18, 2026Kutchinsky London 1970 Convertible Collar In Platinum With 154.2 Cts In Diamonds Aquamarines & RockPlatinum Auction Group4.3(68)Est. US$175,000-US$192,500US$17,500
SaveFeb 18, 2026Art-Deco 1925 Platinum Necklace With VS Diamonds & Colombian EmeraldsPlatinum Auction Group4.3(68)Est. US$13,650-US$15,015US$1,200
SaveFeb 18, 2026ART DECO 1930 Platinum Cocktail Ring With Star Blue Moonstone & DiamondsPlatinum Auction Group4.3(68)Est. US$12,985-US$14,285US$1,200
SaveFeb 18, 2026LACLOCHE 1920 Paris Art Deco Enameled Jabot Platinum Diamonds & Lapis BuddhaPlatinum Auction Group4.3(68)Est. US$9,800-US$10,780US$950
SaveFeb 18, 2026LAMBERT BROTHERS 1925 Art Deco Toi Et Moi Ring In Platinum Sapphires & DiamondsPlatinum Auction Group4.3(68)Est. US$9,950-US$10,945US$950
SaveFeb 18, 2026BALLERINA Cocktail Ring In Platinum With 3.98 Cwt. In Red Ruby And DiamondsPlatinum Auction Group4.3(68)Est. US$7,650-US$8,415US$750
FeaturedSave6 days LeftAuthentic! Tiffany & Co Elsa Peretti Platinum Diamond Large Open Heart NecklaceChairish Auctions4.5(10.3k)Est. US$12,762-US$15,000US$11,000
FeaturedSaveEnds in 3d 6hMens Solid & Heavy Platinum Swiss REEF Watch with Diamond dial* 45 mm Long* EXLNTChairish Auctions4.5(10.3k)Est. US$8,000-US$10,000US$3,400
FeaturedSaveEnds in 3d 6hVintage HAMILTON 1950's Platinum Ladies Watch with 6 cts Diamonds VS1 E/F ColorChairish Auctions4.5(10.3k)Est. US$11,000-US$13,000US$4,200
FeaturedSaveEnds in 3d 1hCocktail Ring with Large Rock CrystalChairish Auctions4.5(10.3k)Est. US$900-US$1,100US$380
SaveFeb 18, 2026SOUTH-SEAS PEARLS Platinum Dangle Cluster Earrings With 13.60 Ctw VS DiamondsPlatinum Auction Group4.3(68)Est. US$42,500-US$46,750US$4,250
SaveFeb 18, 2026OSCAR HEYMAN Cocktail Ring Platinum With 8.78 Ctw Diamonds Sapphires EmeraldsPlatinum Auction Group4.3(68)Est. US$29,500-US$32,450US$2,750
SaveFeb 18, 2026ART DECO 1940 Cocktail Ring In Platinum With Ctw Carre Diamonds & EmeraldsPlatinum Auction Group4.3(68)Est. US$8,950-US$9,845US$850
SaveFeb 18, 2026JOHN LANDRUM BRYANT PLATINUM NECKLACE & EARRINGS WITH 27.39 Ctw OF VVS-1 DIAMONDSPlatinum Auction Group4.3(68)Est. US$49,900-US$54,890US$4,750
SaveFeb 18, 2026FRENCH 1938 Art-Deco Platinum Clips Earrings With 27.62 Ctw Diamonds & TurquoisesPlatinum Auction Group4.3(68)Est. US$9,750-US$10,725US$950
SaveFeb 18, 2026FRENCH 1925 Art-Deco Platinum Cocktail Ring With 4.88 Ctw Sapphires & DiamondsPlatinum Auction Group4.3(68)Est. US$9,850-US$10,835US$950
SaveFeb 18, 2026Art Deco 1930 Platinum Convertible Pendant Brooch With 5.02 Cts In Diamonds Calf CutPlatinum Auction Group4.3(68)Est. US$8,950-US$9,845US$850
Save4 days LeftPlatinum Diamond RingNew England Auctions - Fred Giampietro4.6(440)Est. US$8,000-US$12,000US$1,500
FeaturedSave6 days LeftTiffany & Co Schlumberger 18k Yellow Gold Platinum Diamond 5 Leaf Pin BroochChairish Auctions4.5(10.3k)Est. US$17,000-US$20,000US$12,000
FeaturedSaveEnds in 5d 1hGIA Fancy Light Yellow Cushion Halo Diamond Engagement Ring Platinum, 2.67 CTWChairish Auctions4.5(10.3k)Est. US$18,000-US$22,000US$7,500
SaveFeb 24, 2026David Webb 18k Gold Platinum Azurite Malachite Ruby & Diamond NecklaceAkiba Galleries4.7(1.9k)Est. US$40,000-US$60,000US$20,000(1 bid)
SaveLive NowJEWELRY. Platinum and Diamond Pendant or Brooch.Clarke Auction Gallery4.5(604)Est. US$2,000-US$3,000US$1,100(3 bids)
SaveLive NowPlatinum Diamond Infinity Necklace 63 Carats by William GoldbergBidhaus4.2(837)Est. US$428,038-US$556,449US$329,000
SaveLive NowJEWELRY. David WEBB Platinum and Diamond WatchClarke Auction Gallery4.5(604)Est. US$8,000-US$12,000US$4,000
SaveFeb 24, 2026GIA Platinum & 7.55ct Emerald-Cut Diamond Ring (VS1, N Color)Akiba Galleries4.7(1.9k)Est. US$25,000-US$35,000US$10,000(1 bid)
SaveFeb 24, 2026Graff Platinum Oval & Asscher Cut Diamond Eternity RingAkiba Galleries4.7(1.9k)Est. US$20,000-US$30,000US$11,000(2 bids)
SaveFeb 24, 2026Platinum Diamond Line Bracelet SignedAkiba Galleries4.7(1.9k)Est. US$20,000-US$30,000US$10,000(1 bid)
SaveLive NowJEWELRY. Platinum, Gold and Diamond Earrings.Clarke Auction Gallery4.5(604)Est. US$1,500-US$2,500US$850(2 bids)