Kyanite Multi 4mm Round - 15-16 Inch Color_Blue almost black glass with flecks

almost black glass with flecks of copper suspended within it

they appear dark or black

many people believe that diamonds are formed from coal

It sometimes features dark brown to black dendritic inclusions that branch like tiny tree limbs through the stone

It's a beautiful specimen

Kyanite Multi 4mm Round - 15-16 Inch Color_Blue almost black glass with flecksKyanite 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