collection of different minerals collected in the german erzgebirge

slate stone mineral jasper colorful amethyst red tiger eye gemstone collection sodalite howlite decoration amazonite set polished gray top view hematite jewelry turquenite lemon jade decorative carnelian calcite green pattern serpentine rhodonite blue natural gem pebble obsidian semiprecious nature crystal color kupferkies kalksinter marienglas steinsalz katzengold muskovit anhydrit white isolated