set of various brown unpolished stones with names

andradite axinite background bauxite bronzite cassiterite chondrodite collage collection cutout dravite galenite garnet gemstone glass glendonite goethite granite hyalobasalt ikaite ilmenorutile isolated limonite magnetite mahogany mineral morion name natural obsidian pumice quartz quartzite raw rock rough set smoky spessartine sphalerite sphene stone tigereye titanite tourmaline unpolished various volcanic white zircon