Men's prayer beads, black onyx, tiger's eye stone, 4 piecesWhy not make the standard rosary for men a little more luxurious? What is Black Onyx Black 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 is a power stone that has been used as a talisman and amulet to ward off evil since ancient times. It has been used