Aura Quartz are indeed natural, earth-made crystals, whose surface has been coated with Gold or other metals to give them an iridescent & metallic sheen.
These spiritually healing gems are created in a vacuum chamber i.e. the quartz crystals are coated in gold by vapor deposition. The quartz is heated to 871 °C (1600 °F) in a vacuum, where the gold vapor is added to the chamber. The gold atoms fuse to the crystal's surface, which gives the crystal an iridescent metallic sheen.
*Each hairpiece is OOAK & HANDMADE, therefore, each and every-one is special and has its own unique characteristics.