set of various brown unpolished stones with names

aragonite background biotite brown cairngorm cassiterite collage collection cut cutout description eye haematite hematite ilmenorutile iron isolated kidney limestone magnesium mica mineral morion name natural nbbearing ore orthoclase out phlogopite quartz rauchtopaz raw rock rough rutile sample sandstone set siderite smoky spar specimen sphene stone tiger tigereye tigers titanite travertine unpolished various white