Green Kyanite 5x10-20mm Top Drill Teeth - 15-16 InchKyanite 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

and crystal formations on the collars are natural and unenhanced in any way

brown and gray

with small

The two most popular classes of Australian Opal are Black Opal mined in Lightning Ridge and Fire Opal

and it is also known as Toog

which may form green stains or specks on Azurite crystals or aggregates

botryoidal

It is also said to aid artists in the emotional process of bringing forth authentic and vulnerable work

Fire Opal is a transparent or translucent stone named for the vivid red

giving it a similar appearance to Topaz

including helping one choose their highest path in life

It is known for its abstract designs in rusty red