Copper wired Ammonite Handmade Earrings . Ammonite Guide: Properties: Ammonites are fossilized, spiral-shaped shells of extinct marine cephalopods (related to squid/octopus) from 66–416 million years ago. Metaphysically, they are used for grounding, transformation, and absorbing negative energy. Their spiral structure symbolises evolution, Kundalini activation, and the eternal cycle of life, often promoting wisdom and prosperity.