Classic gents black onyx and genuine diamond rhomboid ring is crafted of solid sterling silver .925 and 14 karat white gold rhomboid. Diamond is 0.01 carat . Genuine oval black onyx gemstone measures 14mm x 10mm. Ring weighs 5.10 grams and is available in sizes 9, 10, 11 and 12. Features a high polished and satin finish. Marked 925 14K on ring shank.