Blue Kyanite 8mm Round - 15-16 Inch Multi to Picasso after its type locality

after its type locality

is desired by some collectors as proof of a natural stone

which come in a variety of colors

igneous rock with high silica content

The color of Smoky Quartz is due to natural irradiation and traces of aluminum within the crystal lattice of the stone

Blue Kyanite 8mm Round - 15-16 Inch Multi to Picasso after its type localityKyanite 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