The perfect piece for lovers of the Great Lakes! Sand from all 5 Great Lakes is mixed and completely sealed as the centerpiece for this ring. This ring is completely sealed making it UV proof, waterproof, durable and designed to be low profile making it perfect for everyday wear. We make these rings by hand in Traverse City, Michigan using 960 Argentium Sterling Silver. This fine silver provides superior oxidization resistance, scratch resistance, a composition that is lead, nickel and copper free, along with a great balance of durability and flexibility. Argentium silver provides a brighter, whiter appearance versus traditional Sterling Silver. Available in sizes 5-11. (Note that these rings are handmade, please allow up to 1/4 variance in sizing.) To learn more about Argentium Silver, use the following resources: Argentium Sterling Silver vs. Sterling Silver , Argentium History , Testimonials