Crinoid Fossil Stone Necklace

This necklace has a Crinoid Fossil stone cabochon. Crinoids are marine animals that resemble flowers and date back millions of years. The shapes that look like backbone skeletons are the stems, and the disc shapes are individual discs that have separated from the main stem during geological erosion. Millions of years ago these particular fossils formed in a limestone bed, and so they were incorporated as a marble material, rather than forming as individual fossils.