... effect on rheumatism lenitive and blood circulation;4. Various minerals of zinc, iron, calcium, etc. composed in the jade ... blood circulation, promote body immunity, better sub-healthMain effects of Tourmaline are as follows 1. Give off far infrared ... 3. Emit bioelectricity (circuit of life)4. Provide microelements (health soil of cell)5. Antibacterial, bacterial-restrain (health guard) Best service was ...