These shells are exact replicas molded from actual shells I found on Sanibel Island and Cumberland Island. However they are common shells found on many beaches. They are solid silver. Many jewelry sellers have shell bracelets but they not usually replicas of actual shells. They are often small and light weight imitations. If you are a shell collector or shell lover you will love this bracelet! The shells used are, Wentletrap, Olive, Whelk, Miter, Nutmeg, Atlantic Auger, and Spindle. The bracelet with these shells is 7.5 inches long. If you need a smaller bracelet I can shorten it by repeating smaller shells, or I can leave one out.