These shells are the only seashell considered a gem. They are traditionally used to make shell leis for Kahunas and royalty back in the day. The only place you can pick these shells is the north shore of Kauai and the forbidden island of Niihau. To make this necklace after picking all the shells i had to poke a hole in every shell and ten size them. The clasp is a sunrise shell. also traditionally used for shells leis in Hawaii.