No reason to wait for once and a blue moon to wear this necklace. The Blue Moon Crystal Necklace has a simplistic design that makes it fit for any occasion! The necklace is arranged in a semi-circle with the center row consisting of opaque light blue gems that are complemented by clear cubic zirconia crystals at the top and bottom. The necklace is secured by a 19 inch split chain that is adjustable making it perfect to be worn on its own or layered with another piece.