often with a mottled appearance
Variscite is usually green
it may appear in white
including shiller — a sometimes iridescent bronzelike luster — in some stones
often resulting in bright colors like lime green
Kyanite 2-3x3-5mm Graduated Irregular Rondelle Beads - 15-16 Inch Stone Type_Coral often with a mottled appearanceKyanite 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