beryl crystal mineral gem beads sample on white background

aggregate amethyst aquamarine beryl beryllium birthstone blue carat celestine color crystal crystalline crystallisation crystallization crystallography crystals emerald gem gemology gemstones geology geomorphology healing hydrothermal igneous isolated jewel jewellery jewelry lapidary luxury macrocrystalline metamorphic mineral mineralized mineralogy natural pegmatite precious rock several silicate specimen state stone topaz transparent treasure wealth white