spessartine
Why Does Turquoise Need to Be Treated you ask
they appear dark or black
New Burma Jade is from a newly discovered deposit and closely resembles the top grade Jade from Burma
initially as tools because of its hardness
Blue Kyanite 10mm Round - 15-16 Inch nye_8inch_best spessartineKyanite 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