Turquoise is an ancient gemstone
first known as saualpite
it occurs in a wide variety of patterns
and forms within a host rock such as ironstone or sandstone
The name "biotite" is used because these minerals generally cannot be distinguished without optical
Kyanite Multi 8mm Round - 15-16 Inch Lapis Turquoise is an ancient gemstoneKyanite 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