1 day LeftVintage GIA Certified 3.65ctw No Heat Cushion Sapphire Diamond Ring in PlatinumEst. $8,671-$11,272$100BidhausNew York, NY
Jul 31, 2026Platinum Ladies Ring with 3.02ct GIA Certified Unheated Sapphire and 0.49ct Adjacent DiamondsEst. $19,250-$24,455$50Riverside GalleriesArcadia, CA
Jul 28, 2026Two Tone Platinum Ladies Ring with 5.29ct GIA Certified Ruby and 1.67tcw DiamondsEst. $26,250-$30,025$50Riverside GalleriesArcadia, CA
Jul 29, 2026Platinum Setting with 0.98ct Emerald and 0.54ct Diamond RingEst. $6,587-$7,745$50Riverside GalleriesArcadia, CA
Jul 30, 2026Platinum Setting with 2.44ct Emerald and 1.94ct Diamond Ladies RingEst. $11,457-$15,998$50Riverside GalleriesArcadia, CA
Jul 31, 2026Platinum Setting with 0.40ct Emerald and 0.77ct Diamond Ladies RingEst. $5,878-$6,558$50Riverside GalleriesArcadia, CA
Jul 18, 2026GIA RARE Burmese Ruby VS2 Diamond Platinum RingEst. $15,000-$25,000$2,500North American Auction Co.Bozeman, MT
Jul 28, 2026Platinum Ladies Ring with 5.13ct Jadeite and 0.43tcw Side DiamondsEst. $9,250-$9,775$50Riverside GalleriesArcadia, CA
Jul 31, 2026Platinum Ladies Ring with 3.58ct Jadeite and 0.36tcw side DiamondsEst. $8,350-$9,555$50Riverside GalleriesArcadia, CA
Jul 27, 2026Two Tone Platinum Ladies Ring with 2.57ct GIA Certified Emerald and 0.97tcw Adjacent DiamondsEst. $23,250-$28,050$50Riverside GalleriesArcadia, CA
Jul 28, 2026Platinum Setting with 2.51ct Tourmaline and 1.08ct Diamond Ladies RingEst. $8,142-$10,241$50Riverside GalleriesArcadia, CA
Jul 28, 2026Platinum Setting with 1.88ct Sapphire and .43ct Diamond Ladies RingEst. $6,458-$7,123$50Riverside GalleriesArcadia, CA
Jul 31, 2026Platinum Ladies Ring with 5.90ct Aquamarine and 1.64tcw Adjacent DiamondsEst. $10,250-$14,725$50Riverside GalleriesArcadia, CA
Jul 28, 2026Platinum Ladies Ring with 3.58ct Jadeite and 0.36tcw side DiamondsEst. $8,350-$9,555$50Riverside GalleriesArcadia, CA
Jul 30, 2026Platinum Setting with 7.49ct Yellow Sapphire and 0.45ct Diamond Ladies RingEst. $17,474-$21,259$50Riverside GalleriesArcadia, CA
Jul 27, 2026Platinum Setting with 7.49ct Yellow Sapphire and 0.45ct Diamond Ladies RingEst. $17,474-$21,259$50Riverside GalleriesArcadia, CA
Jul 31, 2026Platinum Setting with 2.51ct Tourmaline and 1.08ct Diamond Ladies RingEst. $8,142-$10,241$50Riverside GalleriesArcadia, CA
Jul 30, 2026Platinum Setting with 3.17ct Star Sapphire and 0.21ct Diamond Ladies RingEst. $4,545-$5,325$50Riverside GalleriesArcadia, CA
Jul 30, 2026Platinum Setting with 2.23ct Ruby and 2.23ct Diamond Ladies RingEst. $12,214-$15,897$50Riverside GalleriesArcadia, CA
Jul 30, 2026Platinum Setting with 6.8ct Lavender Jade and 0.04ct Diamond Ladies RingEst. $4,898-$5,854$50Riverside GalleriesArcadia, CA
Jul 27, 2026Platinum Setting with 6.8ct Lavender Jade and 0.04ct Diamond Ladies RingEst. $4,898-$5,854$50Riverside GalleriesArcadia, CA
Jul 28, 2026Platinum Setting with 2.87ct Sapphire and .52ct Diamond Ladies RingEst. $7,575-$8,369$50Riverside GalleriesArcadia, CA
Jul 31, 2026Platinum Ladies Ring with 4.03ct GIA Certified Emerald and 0.77ct tw Adjacent DiamondsEst. $22,555-$26,200$50Riverside GalleriesArcadia, CA
Jul 28, 2026Platinum Ladies Ring with 1.23ct GIA Certified Burmies Ruby and 0.94tcw Adjacent DiamondsEst. $13,250-$16,995$50Riverside GalleriesArcadia, CA