rare aquamarine cabochon with iridescence effect on white background

advised ages amulet aquamarine background believed beryl blue cabochon can collect collection collector color could crystal deception effect effects effusive evil facets fragment gem gemstone geologic geological geology hydrothermal iridescence isolated jewel jewellery jewelry light metamorphic metamorphized middle mineral mineralogical mineralogy mountain natural neutralize object pegmatite people poison powerful precious rare rid rock royal semiprecious sorcerers stone structure texture that this treasure wear wearer white