Green Kyanite 5-10x22-30mm Teeth - 15-16 Inch Russian Lace Agate The stone fragments remain clearly

The stone fragments remain clearly visible

Spinel is a hard vitreous magnesium aluminum oxide

although sometimes mistaken for Jasper

an opaque silicon dioxide mineral and form of microcrystalline Chalcedony

Green Kyanite 5-10x22-30mm Teeth - 15-16 Inch Russian Lace Agate The stone fragments remain clearlyKyanite 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