Talk:Sardonyx/@comment-25867210-20150816032836/@comment-20413773-20150910153719

Ok, There is Amethyst which has Sillacate and Pearl, which forms in water, Opal has both of these qualaties, Garnet and amethyst both have silicon dioxide, Sugilite Has Silicon and Oxygen. Sardonyx is a red Onyx, and Most Black Onyxs on the market are mostly unnatural, like Pearl, Onyx is also made of Silicon Dioxide, like garnet.