Product Details Marquise Opal charm. Faceted Silverite. Necklace length is adjustable from 16 to 18 inches. Safe for sensitive skin. Handcrafted in the USA. All metal components are 14k Gold Filled. Types Of Gold, Demi Fine Jewelry, Negative Energy, Gold Plated Jewelry, Jewelry Plate, Sensitive Skin, Gold Filled, Necklace Lengths, Opal