set of various brown raw stones with names

aragonite ashtuff background basalt biotite brown calcite cassiterite chondrodite collage collection cut cutout description diopside eye flint haematite hematite ijolite ilmenorutile isolated magnesium mica mineral morion name natural nbbearing orthoclase out phlogopite pumice quartz raw rock rough rutile sample sandstone set siderite smoky specimen stone tiger tigereye tigers tuff unpolished urtite various white