What is the difference between powers of garnet, agates, jade, tourmaline and amethyst?

Jade, agate, chalcedony, jasper, amethyst used in Ereada®  Gemstone mats are all 100% natural semi-precious stones. They have similar properties and features but with some differences. Please, check our catalog for more information. Some folks have different gemstone preferences. 

Amethyst is considered the main stone because when preheated, it emits rays in the range from 5 to 14 microns, with the most of emitted energy concentrated at 2 peaks at 7 and 12 microns wavelength. This range is considered compatible, so we use amethyst as a main crystal for Far Infrared Rays generation. Even in Gemstone mats, the share of amethyst in the crystals blend is around 50%.

Tourmaline ceramic microspheres are the best for negative ions because we bake them with gold ore, volcanic rocks, yellow clay, ochre, and eleven other minerals to enrich anion emission to the level of 700-1500 ions. 

Ereada® mats of the same size are 20-30% heavier than other mats in the market. They heat up slower and maybe less hot to touch, but more crystals inside will generate more infrared rays.