Blue Hackmanite 8mm Round - 15-16 Inch 14-Mar meaning it forms by replacing

meaning it forms by replacing another mineral’s crystal structure atom by atom with its own crystal structure

It occurs with wave-like bands of charcoal gray

in 1906 by two children who stumbled over a metal object stuck in the ground

they come in a rainbow of colors besides red

It may be red

Blue Hackmanite 8mm Round - 15-16 Inch 14-Mar meaning it forms by replacingDiscovered 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.