Platinum Art Deco Engagement Ring with 4.27 Ct Old European DiamondDiamond Depot4.2(13)US$19,500May 13, 2026
AN EARLY 20TH CENTURY DIAMOND THREE-STONE RING The central old cushion-shaped diamond weighingAdam's Auctioneers4.3(12)€3,000May 12, 2026
Antique Vintage Art Deco Round Diamond Platinum Engagement Ring 1.60 CTWChairish Auctions4.5(10.4k)US$4,000
Art Deco Platinum 1.60 Ct Diamond Ring L VVS1 with 6 Accent DiamondsMynt Auctions4.4(868)US$100May 11, 2026
