Women's prayer beads, black onyx, light amethyst, black, wisteria tasselA must see for those who feel that the classic black onyx is not enough! A must see for those who feel that the classic black onyx is not enough! We would like to introduce a rosary made of classic black onyx and Fujiunseki (light amethyst). ? Introducing 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