Blue Kyanite 6x12-10x20mm Free Form Pear A Grade - 15-16 Inch 4mm Matrix Blue/Green/Black but also for industrial purposes

but also for industrial purposes from watch gears and scientific instruments to sandpaper and other abrasives

Tektite is a natural glass formed by meteorite collisions with Earth

These stones have unique green pigmentation when compared to other turquoise sourced from the region

olive green and gray to green

it is said to never need cleansing and can align

Blue Kyanite 6x12-10x20mm Free Form Pear A Grade - 15-16 Inch 4mm Matrix Blue/Green/Black but also for industrial purposesKyanite 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