Hackmanite 8mm Round - 15-16 Inch Golden Amethyst is a beautiful purple

Amethyst is a beautiful purple stone

it lightens because of further weathering and becomes Malachite

pattern and finish of the original DZI beads

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

Tanzanite is both extremely rare and extremely attractive

Hackmanite 8mm Round - 15-16 Inch Golden Amethyst is a beautiful purpleDiscovered in Greenland in the late 1890's, hackmanite is named for Finnish geologist Victor Hackman. It is a rare occurrence to find gem grade hackmanite; at best, most crystals are translucent. Hackmanite is the light pink to pale violet variety of sodalite. It is a particularly unusual gem because it exhibits a special optical property known as tenebrescence, a type of reversible photochromism. Hackmanite is very reactive under UV light.