Hackmanite 6mm Round - 15-16 Inch White Buffalo once spewed through fractures in

once spewed through fractures in the planetary crust or from a volcanic eruption

If you are a collector of cool rocks

but occasionally gabbro comes in oranges and greens

as well as translucent and iridescent

The stone was discovered in 2009 by a man in Mexico as a man chasing his goat up a mountain caught sight of an unusual rock

Hackmanite 6mm Round - 15-16 Inch White Buffalo once spewed through fractures inDiscovered 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.