Jul 15, 2026TIFFANY & CO 1.27 CARAT F VS1 DIAMOND PLATINUM ENGAGEMENT RING GIAEst. $27,404-$30,628$22,500Modern JewelryValley Village, CA
Buy NowPlatinum Diamond Eternity Band with Greek Key Motif and Engraved Sides$2,840(13 bids)Mynt AuctionsNew York, NY
Jul 15, 20261.50CT L SI1 ROUND DIAMOND 18K GOLD & PLATINUM VINTAGE ENGAGEMENT RINGEst. $16,881-$18,867$13,750Modern JewelryValley Village, CA
Buy NowVintage GIA Certified 15.97ct Blue Star Sapphire Diamond Ring in Platinum$17,610Diamond DepotNew York, NY
Buy Now5.6ctw GIA Colombian Emerald and Diamond Three Stone Platinum Gold Cocktail Ring$18,630Diamond DepotNew York, NY
Buy NowAntique Edwardian Diamond Engagement Ring Platinum 3 ct GIA Sz 5.75$36,190(4 bids)Eco Estate JewelryLakeway, TX
Buy NowVintage Platinum GIA 1.47ct Oval No Heat Burma Ruby Diamond Ring$4,270Diamond DepotNew York, NY
Buy NowGIA 3.09ct Old European Diamond Ring 18k Yellow Gold Platinum Basket$23,260Diamond DepotNew York, NY
Buy NowPlatinum Lucida Engagement Ring with 0.82ct H VVS2 Diamond by Tiffany & Co.$3,420Diamond DepotNew York, NY
Buy Now.35ct. NATURAL DIAMONDS CHANNEL DECO GILT ETCHED SCALING SHANK RING PLATINUM *v$2,325Jasper52New York, NY
Buy NowGIA Certified 1.53ct Diamond Platinum Yellow Gold Engagement and Wedding Ring Set$4,740Diamond DepotNew York, NY
Buy NowTiffany & Co. Soleste Diamond Halo Ring Platinum Size 7.5 1 ctw Cushion$6,470(1 bid)Eco Estate JewelryLakeway, TX
Buy NowPlatinum Asscher Diamond Engagement Ring 2.07 ct H IF GIA Flawless$20,895(1 bid)Eco Estate JewelryLakeway, TX
Buy NowGIA Natural Fancy Intense Yellow Diamond Platinum Halo Ring 1ctw Size 7.5$4,235Eco Estate JewelryLakeway, TX
Buy NowGIA Certified .49ct Natural Round Diamond solitaire ring E/I2 14kt platinum *v$1,674Jasper52New York, NY
Buy NowClassic Platinum 2ct Princess Diamond Engagement Ring Size 7.5 GIA D SI1$5,575(1 bid)Eco Estate JewelryLakeway, TX
Buy Now5.30ct Natural Cushion Emerald Diamonds Ring Platinum Split Shank Fine Green *v$4,185Jasper52New York, NY