Strewn around this delicate chain bracelet are oval slices of brown shell, an iridescent stone that shimmers to beautiful effect, even in low light. The bracelet is made from polished 925 silver, which provides cool counterbalance to the richness of the inlays. Strewn around this delicate chain bracelet are oval slices of brown shell, an iridescent stone that shimmers to beautiful effect, even in low light. The bracelet is made from polished 925 silver, which provides cool counterbalance to the richness of the inlays.