Mandala Rainbow Necklace Earring Set The rainbow necklace is a unique handcrafted design representing infinity that gives energy light happiness. It is designed with sand beads and the necklace length is 43cm. It does not contain any allergenic substances, sand beads are first quality glass beads, no peeling or discoloration. It has no closure and should be worn directly on the neck. It is believed to bring luck and happiness to the wearer.