The most popular Mens Black Onyx Rings are Black Onyx and Diamond Rings 14K Gold Mens Ring 010ct 9/16 in (15mm), Black Onyx and Diamond Rings 14K Gold Mens Ring 168ct 3/4 in (18mm), and Black Onyx and Diamond RingsShiny, black, and smooth, onyx is the mystical birthstone of December, and a black onyx ring or a black onyx pendant makes a perfect birthday gift Durable and easy to care for, onyx has a hardness of 7 For safe cleaning, use a solution of warm water and mild dish soap, scrubbing with a soft brush to remove dirt and dustBlack Hills Gold TriTone Onyx Eagle Ring in Sterling Silver Reg $ Sterling Silver Onyx Ring Men Reg $1, Men's Sterling Silver Onyx & 1/3 Carat TW Black Diamond Ring Reg $ Men's Black Onyx Rectangle Ring Reg $1, Sterling Silver Onyx and 1/4ct TW Diamond Ring Men Black onyx ring gold ring with black stone women's