black and gray raw minerals with names

mineral rock natural stone name set collection black gray gemstone gem raw uncut sample specimen isolated white background obsidian carborundum spinel sphalerite kyanite skutterudite ilvaite hornfels hulsite antimonite diorite braunite pinolite andradite morimotoite cleiophane mushketovite annite molybdenite trachybasalt dolerite foyaite gabbronorite melanite lithiophorite tenorite cryptomelane ilmenite melilite nuummite labradorite schorl