I found a crescent shaped pin with some opalish stones in a bag of broken jewelry. I turned it into this necklace - I added a couple of chains hanging down - one with a large milky stone and two with some opal colored crystals. Then I added seed beeds to the pin back to hold the dangling chains in place. Finally I looped a long chain at the ends of the pin and closed it. Voila! Pin is now a necklace!