Every piece of Mariana Jewelry is hand crafted with Austrian crystals and is designed with love, warmth, and spiritual harmony. In order to preserve the item at its highest quality: avoid direct contact with water, moisturizing cream or perfume. Your Mariana jewel is Nickel Free and has a lifetime guarentee against all manufacturing defects. Each piece is hand made in Israel. This piece is perfect to wear by itself or stack with other bracelets. The bracelet is adjustable so no guessing on sizing.