I'm selling this because I bought it but never used it. It has a magnetic clasp, making it easy to put on and take off. High-purity terahertz ore 　High purity 99.999% 　(Inspected and identified by a professional) ・Necklace 　　128-facet round cut 3mm beads 　　Approximately 42cm long (including clasp) 　　Magnetic clasp 　　　　(Metal parts 16 x 4.5mm) 2 ball tips 　　Nylon-coated wire used 　　　　　　　　　　(0.35mmΦ)