Crinoid Fossil Rings in Sterling Silver  

Ancient Sea Lily Fossils Set in .925 Silver Rings

Crinoids were marine animals related to modern starfish and sea urchins, though their plant-like appearance earned them the name "sea lilies." The fossils in these rings preserve the columnar segments of their stalks, which anchored them to the seafloor while feathery arms captured nutrients from passing currents. Most crinoid fossils in jewelry come from limestone deposits in the American Midwest, Morocco, and Indonesia, where ancient seabeds compressed over millions of years. The natural colors range from gray and brown to tan and cream, depending on the minerals that replaced the original organic material during fossilization. Crinoid fossil rates between 3.5 and 4 on the Mohs hardness scale, similar to fluorite. This softness means these rings suit occasional wear rather than daily use. The fossil surfaces show natural variations in pattern density and segment size, as each piece formed from a different individual animal. SilverRush Style has offered natural stone jewelry since 2005. Every ring ships from our US warehouse with no charge for domestic delivery. Browse the collection to find a crinoid fossil ring that fits your style and budget.