Rhyolite Mar 29, 2024 11:48:44 GMT -7 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Admin on Mar 29, 2024 11:48:44 GMT -7 Out in the field we are missing out on collecting rhiolite. It is silica, hard ar granite, probably 6-7, has unusual patterns, polishes well. Try it.