Argentium Sterling Silver pendant with a layer of pure rhodium (white gold) coating to protect from tarnishing and metal allergies. Genuine 10 mm round Quartz Crystal stone set so that the stone rotates with you as you move. It dazzles in the sunlight as if it was a diamond but has the healing energy quality of pure Quartz Crystal. Quartz Crystals are claimed to help stimulate the immune system and balance out your entire body. 18" sterling silver with a layer of pure rhodium chain included.