Very Beautiful I Purple You Bracelet for BTS Fans around the Universe! Materials: 18K Gold Filled Copper, Rhodium. Allergy-Free Materials, not easy to fade, can be used for a long time. This Chain is kind of soft because it's Pure 18K Gold filled but it's strong and durable. The Purple Heart Charm is Enamel Charm, very cute and pretty! How to handle your Jewelry to last the color for a long time. Remove it when you have a shower.