Hematite Pyrite Plated 4mm Rondelle - 15-16 Inch rock-specimens-perfect-gift-idea Terahertz is a spectacular man

Terahertz is a spectacular man made ore

and due to its unique composition

as well as grays

primarily earth tones

Turquoise is now mined all over the world

Hematite Pyrite Plated 4mm Rondelle - 15-16 Inch rock-specimens-perfect-gift-idea Terahertz is a spectacular manHematite is an iron oxide and one of the few gemstones with a metallic luster. When tumbled it can have the look of polished steel. Hematite is black to steel to gray or silver to gray, as well as brown to reddish brown or red in color. Its name is derived from the Greek word for blood, haima, owing to its red appearance when sliced thinly or powdered.