Ammonite necklace | Raw ammonite necklace | Fossilized ammonite jewelry | Petrified snail necklace | Prehistoric ammonite jewelry This listing is for one ammonite fossil electroformed and strung on an 18" sterling silver chain. Our jewelry is unique and one-of-a-kind. Please note there will likely be variances in the size, shape and color of each stone. All elements of your piece are handcrafted in our tiny studio on the island of Martha’s Vineyard. Your jewelry will arrive ready for gift-giving in hand-stamped, earth-conscious packaging. In stock pieces are shipped in 1-3 business days. If you purchase a custom piece or size, or if your piece is not in stock, we will require more time to make your order and will update your projected ship date to reflect this.