Hana Wrap Bracelet/Necklace in Chalcedony . The Hana is a versatile piece that can be worn as a wrap bracelet or as a necklace. The magnetic closure makes this the easiest piece to throw on and go. A chalcedony pendant is set in a 14k gold bezel on a vermeil and chalcedony stone chain with magnetic clasp closure. Hypoallergenic This product is made of metal alloy (silver and copper and other metal alloy) with high quality plating (It will last for a long time without tarnish).