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where copper contributes to blue tones and iron introduces green variations
It has a hardness of 8 on the Mohs hardness scale
These rough specimens are mined all over the globe and hand selected for Dakota Stones product line
It is believed by some to improve memory and increase analytical skills
Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors
Blue Kyanite 5x10-20mm Top Drill Teeth - 15-16 Inch Sage where copper contributes to blueKyanite 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
US$ 371.51
US$ 493.82