Terahertz Stone Beads Strands, Star Cut Round Beads, Faceted, Size: about 8mm in diameter, hole: 0.9mm; about 51pcs/strand,38.5cm.Terahertz is a man-made gemstone that is invented by Japanese scientists in order to protect the body against electromagnetic smog and harmful radiation. What's more, it's an artificial stone called silicon, but terahertz stone has stronger prowess.
