Blue Kyanite 5x10-20mm Top Drill Teeth - 15-16 Inch 15x20mm Indigo gabbro is a color

Indigo gabbro is a color variant of the igneous mineral

Tourmalated Quartz is clear Quartz that has formed with Black Tourmaline

Blue Sodalite is sometimes referred to as “poor man’s lapis” because of its similar color and much lower cost

and features dark manganese dendrites throughout

It is known for its colors -- dark green and mustardy yellow

Blue Kyanite 5x10-20mm Top Drill Teeth - 15-16 Inch 15x20mm Indigo gabbro is a colorKyanite 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