beautiful amethyst druse a white background

amethyst amethystine attractive azurite beautiful bijou cap carbuncle commercial crocidolite crystal crystalline crystallized cut deposit deposits druse extractive face facing faux gem gemmary gemmology gemology gems gemstone hardstone hyacinth jewel magenta mineral mineralogy mining natural noddle ore ornamental polished precious product purple rhombohedron sapphirine semi semiprecious simple stone syngony trim useful violet