Green Kyanite 5-10x22-30mm Teeth - 15-16 Inch Russian Lace Agate hackmanite is named for Finnish

hackmanite is named for Finnish geologist Victor Hackman

It is produced by certain molluscs as an inner shell layer

Fossil Coral is the prehistoric fossilized remains of the invertebrate reef builders that live in tropical oceans

colored by carotenoids

The stone fragments remain clearly visible

Green Kyanite 5-10x22-30mm Teeth - 15-16 Inch Russian Lace Agate hackmanite is named for FinnishKyanite 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