jade contains the necessary minerals calcium and magnesium. 40% of magnesim is the material of chlorophyll. jade has the same wave with human gi wave and can penetrate human cells. when the jade is heated, it emits long-wave bio-spectrums that penetrate the body 14~15cm (5.5~6 inches). it makes resonance effects that can revive tissue, promote blood circulation, make weak alkalizing blood, and emit harmful waste toxins.