128-facet cut 10mm, 8mm, and 6mm beads. Star-cut 4mm beads used, 50cm in length. I've never seen a Terahertz necklace this elaborate before. I was able to offer this at such a low price because I directly imported the materials from overseas and assembled it myself. Genuine Terahertz is surprisingly light the moment you hold it. There also seem to be fakes made by surface-treating hematite. It's made with 0.5mm thick wire, so it's unlikely to break. The clasps are surgical stainless steel (316L stamped), so it's safe for those with metal allergies. It won't rust even if you wear it in the bath. When placed on ice, the ice melts instantly. The 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 wavelength, 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 matter 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.