Large pendant ammonite yellow agate peridot citrine wrapped in sterling silver AmmONITE Roaming the oceans as far back as 200 million years ago, these squid-like sea creatures are fossilised relatives of the chambered nautilus shell. The name “ammonite”, from which the scientific term is derived, was inspired by the spiral shape of the fossilized shells, which somewhat resemble tightly coiled rams’ horns. It is thought the name derived from the Greek God Ammon, who is typically depicted wearing ram’s horns. Marked 925 3.75" long 1.5" wide Condition - Very Good Vintage Large Ethnic Pendant Ammonite Nautilus Shell Stone Peridot Citrine Yellow Agate Sterling Silver Boho