Save2026GIA Certified 21.19ct Natural Ruby Diamond Necklace Platinum **Chairish Auctions4.5(10.4k)Est. $34,000-$41,000Buy Now for $28,615.00
Save2 days LeftPlatinum Ring with 2.31ct GIA Ceylon No Heat Sapphire and DiamondsBidhaus4.2(847)Est. $6,341-$8,243$3,700
SaveApr 10, 20264.12ct Asscher Diamond Eternity Band PlatinumDiamond Depot4.3(11)Est. $20,490-$24,793$7,200
Save3 days LeftPlatinum Ring with 2.31ct GIA Ceylon No Heat Sapphire and DiamondsDiamond Depot4.3(11)Est. $7,944-$9,613$2,200
SaveBuy NowPlatinum GIA Certified 8.15ctw Natural Burma Jade Diamond Cocktail RingDiamond Depot4.3(11)$2,890
SaveEnds in 17h 34mANTIQUE PLATINUM TOPPED GOLD AND DIAMOND BRACELETBonhams4(386)Est. $800-$1,200$650(1 bid)
SaveBuy NowVintage Platinum GIA Certified 10.47ct Peridot Diamond Cocktail RingDiamond Depot4.3(11)$7,520
Save3 days LeftEdwardian Platinum GIA 1.29ctw Diamond Solitaire Engagement RingDiamond Depot4.3(11)Est. $9,073-$10,979$3,450
Save6 days LeftEstate Platinum Emerald Diamond Cocktail Ring 1.16ct Wide BandDiamond Depot4.3(11)Est. $4,004-$4,845$1,875
SaveBuy NowDiamond and Sapphire Crown Brooch in 18K Gold and Platinum with 62 Old Mine StonesDiamond Depot4.3(11)$7,260
Save4 days LeftAntique Filigree By The Yard 1.80ctw Diamond Necklace 30" Platinum GoldDiamond Depot4.3(11)Est. $9,521-$11,520$4,450
Save6 days LeftPlatinum Cocktail Ring With Large Boulder Opal and Diamond AccentsDiamond Depot4.3(11)Est. $7,199-$8,711$2,300
SaveBuy NowVintage Platinum 3.6ctw GIA Oval Sapphire Diamond Band RingMynt Auctions4.5(853)$5,660(15 bids)
SaveBuy NowPlatinum Cocktail Ring With Large Boulder Opal and Diamond AccentsDiamond Depot4.3(11)$4,280
Save2026GIA Certified 3.77ct Pear Shape Diamond Ring Platinum Classic EngagementChairish Auctions4.5(10.4k)Est. $30,000-$36,000Buy Now for $25,220.00
SaveBuy NowPlatinum Necklace with GIA Certified 1.21ct G VS1 Round Diamond PendantDiamond Depot4.3(11)$8,360
SaveBuy NowPair of Platinum Sapphire and Diamond Ribbon Brooch Clips 5.1ctwDiamond Depot4.3(11)$9,370
SaveApr 08, 2026Hamilton Vintage Platinum Diamond Watch 3.18ctw Round BaguetteDiamond Depot4.3(11)Est. $11,097-$13,427$3,950
SaveBuy NowMidcentury Platinum Bracelet 16.50ct Round Baguette DiamondsMynt Auctions4.5(853)$32,520(21 bids)
Save6 days LeftElegant 1980s Platinum Marquise Diamond Eternity Band 7.50 cttwDiamond Depot4.3(11)Est. $11,906-$14,407$3,550
Save5 days LeftAntique Art Deco 4.37ct Diamond Pendant Necklace in Platinum 20in ChainDiamond Depot4.3(11)Est. $15,762-$19,072$5,900
Save4 days LeftPlatinum GIA Certified 2.15ct Colombian Emerald and Diamond Shoulders RingDiamond Depot4.3(11)Est. $7,731-$9,355$3,600