Herkimer Diamond Quartz stone hangs on a 16 inch silk string necklace. Each stone is different but measures approximately 3/8 of an inch in width. Clasps with a sterling silver clasp. Comes on a card with the quote, "Wish upon this charm as you put this necklace on. When the thread wears out, believe your wish will come true." If you would like a longer or shorter string, let me know when you checkout what length you would like.