This amethyst necklace is made of purple amethyst gemstones, sterling silver: chain, spring ring clasp and findings. This necklace measures 18 inches in length and the pendant measures about 3/4 inch. All of our jewelry is unique and custom designed. Most of our jewelry can easily be resized. If there is a piece of jewelry that you are interested in, but would like some changes made, please do not hesitate to contact us. All of our jewelry arrives wrapped and ready for giving! We appreciate your