emerald, sapphire or tourmaline green crystals. gems. mineral crystals in the natural environment. stone of precious

amethyst aquamarine aventurine backdrop background beautiful blue brilliant chrysolite crystal crystals decorative emerald fluorite fossils gem gemmology gems gemstone glistening green jade jewel malachite mineral minerals natural precious resplendent rock sapphire sparkling stone stones structure surface texture textured tourmaline transparent vintage wall yakutia