With the rapid development of modern socio-economic, people on jewelry products, as well as their own dress code, packaging requirements increasing, and the main demands on the human body and wear pretty useful minerals like gemstone, tourmaline is one of the strongest energy diversity and color Products, tourmaline and many gorgeous colors touching, characterized by a natural ice cracks, the natural state of products. Because tourmaline itself with piezoelectric and thermoelectric and therefore has a special energy absorbing, a major role to help clear the blood, and can also be treated rheumatoid arthritis, while enhancing blood circulation and reduce fatigue pressure to improve their health. Specifications: 6mm, 8mm, 10mm, 12mm, 14mm