of orthoclase mineral from the mohs scale of mineral hardness on the background from connected molecules

background brown collection connected crystal crystalline decorative feldspar gem gemmological gemmology gemological gemology gemstone geological geology hardness icon illustration isolated little material mineral mohs molecules moonstone natural nature object ore ornamental orthoclase pebble piece plagioclase polished raw red rock sample sanidine scale semiprecious silicon small specimen stone structure sunstone surface symbol textured tumbled vector white