Hackmanite 8mm Round - 15-16 Inch Golden It occurs in a great

It occurs in a great variety of shapes and colors

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

had Red Jasper inlaid in its hilt

Handy Zip-Pouch

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

Hackmanite 8mm Round - 15-16 Inch Golden It occurs in a greatDiscovered 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.