Real semi-precious crystal stud earrings. Metal backing. Lightweight and easy to wear. The stones used for these earrings have been sourced by hand and no two pair are alike. Each rock is hand chiseled and hammered to get a perfect specimen for your jewelry. Here is some info on each of the four different types of stones used: Aqua Aura Quartz enhances your ability to communicate inner truth, and to express inner emotions in a positive way. Herkimer Diamonds are a very powerful balancer of the body and emotions. These double terminated diamonds equals super power. They can be found only one place in the world: Herkimer, NY. Citrine is a powerful healing quartz. it increases self-confidence and the ability to attain your goals. Pyrite hand-chiseled and hammered to get a matching pair of studs.