Blue Kyanite 10mm Round - 15-16 Inch Inc. Gamma ray irradiation

Gamma ray irradiation

and the wood used to make them is only available after natural disasters fell young trees

or black and can be distributed randomly or in bundles or star to like formations

The inclusions are of manganese or iron

though it also can occur in dark brown and golden colors

Blue Kyanite 10mm Round - 15-16 Inch Inc. Gamma ray irradiationKyanite often occurs as long, bladed, striated crystals, transparent or translucent with a pearly luster. An aluminum silicate mineral, it may appear in white, pink, yellow, orange, green, blue, gray and black. In addition to its value as a gemstone, Kyanite is also extremely useful in industrial applications due to its high heat resistance. It is often used in kiln furniture and foundry molds, as well as for brake shoes, grinding wheels and cutting