Vintage Onyx and Diamond Signet Ring,Vintage Mexico Alpaca Green Onyx Mask Ring circa 1960s,ART DECO BLACK ONYX 9CT GOLD INITIAL 'B' SIGNET RING – Ellibelle Jewellery,A 9ct gold vintage initial L black onyx signet ring with patterned shoulders, Birmingham 1966, K 1/2,Men's Gents Vintage 9Ct Gold Signet Ring With Onyx And Eagle Design Shoulders