Kyanite 2-3x3-4mm Faceted Rondelle - 15-16 Inch high-end-discount Sonora Jasper is the trade

Sonora Jasper is the trade name for Sonora Dendritic

Porcelain Agate is a natural agate that is dyed and heated to give it the unique blue/white color and pattern that resembles porcelain

Mohs Hardness: 6-6

The crystal naturally forms with 18 facets

Black Spinel not only has the dark color

Kyanite 2-3x3-4mm Faceted Rondelle - 15-16 Inch high-end-discount Sonora Jasper is the tradeKyanite 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