3 days LeftGIA certified Australian black opal diamond platinum ring size 6.5Est. $3,341-$4,343$100BidhausNew York, NY
2 days LeftTiffany & Co Platinum Diamond Solitaire Pendant Necklace 16 Inch ChainEst. $3,198-$4,157$100BidhausNew York, NY
2 days LeftPlatinum GIA Certified 2.66ctw No Heat Sapphire Diamond Halo RingEst. $3,913-$5,086$100(1 bid)Mynt AuctionsNew York, NY
6 days LeftVintage Platinum GIA 2.49ct Natural Ruby Diamond Ribbon Bow Cocktail RingEst. $3,913-$5,086$100BidhausNew York, NY
22 hrs LeftVintage GIA Certified 13.89ct Blue Star Sapphire Diamond Ring in PlatinumEst. $4,862-$6,320$100Mynt AuctionsNew York, NY
4 days LeftPlatinum 1.17ctw Diamond Solitaire Slide Pendant Adjustable Box ChainEst. $3,445-$4,478$100BidhausNew York, NY
3 days LeftStunning 800 Platinum Engagement Ring Blue Diamond 1.30ctEst. $4,394-$5,712$100BidhausNew York, NY
3 days LeftPlatinum Wide Band Ring with 1.8ctw Square Emerald and Baguette DiamondsEst. $2,470-$3,211$100BidhausNew York, NY
5 days LeftPlatinum PT900 Diamond Channel Band Ring 1.0ct 7.5 SizeEst. $2,873-$3,734$100BidhausNew York, NY
3 days Left15.56ctw Periwinkle Blue Star Sapphire Diamond Halo Ring in PlatinumEst. $3,445-$4,478$100BidhausNew York, NY
2 days LeftElegant 51 Diamond Necklace in Platinum 46.65 Cts F-H VS1-SI1Est. $275,012-$308,013$78,000Diamond DepotNew York, NY
3 days LeftPlatinum GIA 2.37ct Ceylon Sapphire Diamond Cocktail RingEst. $3,822-$4,968$100BidhausNew York, NY
6 days LeftClassic 5 Stone Band Ring Platinum 1.24ctw Diamond VS2 HEst. $3,237-$4,208$100BidhausNew York, NY
1 day LeftAntique Platinum Diamond Cross Pendant with Open Link NecklaceEst. $2,392-$3,109$100BidhausNew York, NY
Jul 15, 2026A Pair of Platinum and Diamond Solitaire Stud EarringsEst. $10-$100,000$10Gallery 63Atlanta, GA
1 day LeftGIA Certified 1.81ct Oval Blue Sapphire Diamond Platinum Cocktail RingEst. $2,353-$3,058$100BidhausNew York, NY
6 days LeftZoltan David 22k Gold & Platinum Diamond Band Ring 0.35ctwEst. $3,913-$5,086$100BidhausNew York, NY
5 days LeftPlatinum GIA Certified 3.66ctw Colombian Emerald Diamond RingEst. $3,913-$5,086$100BidhausNew York, NY
2 days LeftVintage Platinum 5.52ctw Long Cushion Topaz Ring with DiamondsEst. $2,171-$2,822$100BidhausNew York, NY
6 days LeftPlatinum GIA 2.37ct Ceylon Sapphire Diamond Cocktail RingEst. $3,822-$4,968$100BidhausNew York, NY
2 days LeftVintage Platinum 4.88ct Oval Opal Diamond Halo Cocktail RingEst. $2,483-$3,227$100BidhausNew York, NY
3 days LeftTiffany & Co. Initial P Diamond Platinum Pendant 16 inEst. $2,249-$2,923$100BidhausNew York, NY