Kyanite Multi 4mm Round - 15-16 Inch Color_Blue bright red

bright red

they appear dark or black

due to variations in iron content

is a lab-made form of zirconium dioxide

many people believe that diamonds are formed from coal

Kyanite Multi 4mm Round - 15-16 Inch Color_Blue bright redKyanite 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