provided are a far - infrared radiation material and a medicine and a food derived therefrom . the far - infrared radiation material is obtained by steps comprising pulverizing a stone having been absorbing solar energy for a geologically long time , emitting far - infrared radiation of the wavelength 4 - 14 μm and comprising at least about 28 % of si , about 10 % of al , about 6 % of k and about 4 % of fe , and forming the pulverized stone into spheres . this material can be used as sand for a sand bath . also ultrafine powder obtained by pulverizing the sges and grinding the pulverized sges can be used as a medicine or a food .