These pendants attach magnetically, and can be used also as a brooch by using additional magnet included. Chains are 18", and come in your choice of: Pearlesque black, Coral Silk, Silver silk, Gold silk. Chains are Sterling silver plated in Rodium, so they will never tarnish. Magna-Pendants are hand silk screened artwork embellished with diamond dust and glitter, encapsulated in Jewelry grade acrylic and adorned with Swarovski crystals. Made in U.S.A. One year Warranty.