Accents Kingdom Men&#39;s Magnetic Hematite Black Tube Bead Necklace, 20",Accents Kingdom,nmh004_20" /> Brand: Accents Kingdom Material: Magnetic Hematite Enclosure: Strong Black Magnetic Clasp Finish: Gun Metal Polished Black, Size: 1/4'' W, L: 20" Surface Gauss: Approx 600 - 700 Gauss(Each Magnet)