Adorable Sterling Silver Onyx Ring. This uniquely designed ring is set with one 20mm round black onyx gemstone and highlighted by marcasite for that shimmering look. The total weight of the natural onyx gemstone,the marcasite and the 925 sterling is 7 grams. This eye-catching design is a fashion statement and is a perfect gift idea that special someone, an unusual gift for mom,a fun gift for her. This selection is offered at an exceptional discounted price.