Hackmanite 8mm Round - 15-16 Inch Golden pattern and finish of the

pattern and finish of the original DZI beads

Tanzanite is both extremely rare and extremely attractive

It occurs in a great variety of shapes and colors

The green coloring has likened the stone of jadeite in the past

but also for industrial purposes from watch gears and scientific instruments to sandpaper and other abrasives

Hackmanite 8mm Round - 15-16 Inch Golden pattern and finish of theDiscovered 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.