Blue Ice Ammonite Necklace

Ammonites are an extinct group of cephalopods that entered the fossil record 400 million years ago. This necklace is made from a fossil ammonite shell and is inlaid with "blue ice" glacierite.

This mineral is a sodium-aluminum oxide from Indonesia with a beautiful white-to-blue color. Each necklace is set into a fine sterling silver backing with an 18" chain.