Go visit a CRYSTAL SHOP or METAPHYSICAL STORE, or even better, visit a metaphysical store that SPECIALIZES in CRYSTAL HEALING, The ONLY store in NYC that specializes in Crystal Healing is called ROCK STAR CRYSTALS. They have a Hugh selection of HEALING CRYSTALS in almost any stone you can think of, as well as gemstone metaphysical tools like pendulum, merkaba, pyramids, spheres, massage wands. chakra stones and chakra jewelry and more. They do not do workshops, however, although they do have books about crystal healing.