Made from herkimer diamonds and sterling silver or 14k gold filled. Hangs from an 14"-18"/ 35-45 cm adjustable chain. This necklace is made with crystal specimens in their natural formation. We did not cut and facet these stones, Mother Nature made them this way which makes them even more extra special. *Please remember that all gemstones are completely natural so each piece will be similar though different, reflecting the uniqueness of nature.