Uses 10mm beads of 128-facet cut terahertz. Chain length is 45cm. The 128-facet cut is the most labor-intensive, making it a high-end product. I directly imported the materials from overseas and assembled it myself, allowing me to offer it at this affordable price. Genuine terahertz is surprisingly light when you hold it. There seem to be imitations made by processing the surface of hematite. When immersed in ice, the ice melts instantly. A stone that emits terahertz waves Terahertz ore is a silvery power stone similar to Gibeon and hematite, and it is said to emit a frequency that vibrates approximately one trillion times per second. Terahertz waves are a type of electromagnetic wave that emits a long frequency, between 1 trillion Hz and 100 trillion Hz, with a wavelength of 3μm to 1000μm, possessing the properties of both light and radio waves. According to NASA, these terahertz waves are a "transmission wavelength" that penetrates materials and reaches human cells, making it a stone currently being researched worldwide. This terahertz is an artificial ore made of silicon and is not a natural stone. It is characterized by being very light compared to the similar stone hematite, so this terahertz is recommended for those who are concerned about heavy stones.