Jade 7x9-8x10mm Pebble A Grade - 15-16-Inch Disc Terahertz is a spectacular man

Terahertz is a spectacular man made ore

giving some rubies a slightly brownish or purplish tint

It was originally found in the Ural mountains of Russia

but takes a trained eye and a microscope to discern the difference between this material and the Jade it is named after

Hackmanite is very reactive under UV light

Jade 7x9-8x10mm Pebble A Grade - 15-16-Inch Disc Terahertz is a spectacular manJade refers to an ornamental mineral, mostly known for its green varieties. Jade has been used for tens of thousands of years, initially as tools because of its hardness, but is prized, especially in Asian cultures, as a gemstone that is cut into many shapes and often given a high polish.