Kyanite 2-3x3-5mm Graduated Irregular Rondelle Beads - 15-16 Inch Stone Type_Coral it may appear in white

it may appear in white

They are one of the largest molluscs

Variscite is usually green

also known as Herkimer Diamond

but it can also occur as orange

Kyanite 2-3x3-5mm Graduated Irregular Rondelle Beads - 15-16 Inch Stone Type_Coral it may appear in whiteKyanite 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