Green onyx combination bracelet with white onyx and rose amethystA power stone of calm and composure! Recommended for women! Onyx, like agate, refers to a collection of small quartz crystals. Originally it meant striped agate (sardonyx), but in recent years it seems to mainly refer to black onyx and white onyx. Once onyx was considered a "talisman to ward off evil" and has been used as a talisman and amulet to ward off evil since ancient times. It has been used as a talisman to ward off evil thoughts and bad