Blue Kyanite 5x10-20mm Top Drill Teeth - 15-16 Inch 1109202148HR rendering its black especially deep

rendering its black especially deep and mysterious

They represent transition

Its needle to like inclusions of hematite are iridescent red

abbreviated as CZ

Blue Kyanite 5x10-20mm Top Drill Teeth - 15-16 Inch 1109202148HR rendering its black especially deepKyanite 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