Green Kyanite 9x13-12x16mm Top Drill Irregular Flat Drop - 15-16 Inch Mexican Zebra Jasper The most precious Fire Opal

The most precious Fire Opal has flashes of iridescence and is known as Precious Fire Opal or “Firmament Stone

Selenite is a crystal formed from the mineral gypsum

or merlinite

representing spiritual wisdom

Petersburg

Green Kyanite 9x13-12x16mm Top Drill Irregular Flat Drop - 15-16 Inch Mexican Zebra Jasper The most precious Fire OpalKyanite 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