Blue Hackmanite 10mm Round - 15-16 Inch rqtz-spe-str the resulting rock is dark

the resulting rock is dark gray to deep black in color and riddled with pits and holes where air was trapped in the stone

Madagascar Agate is said to be the Emotional Release

tourmaline and other minerals

white or brown

Blue Hackmanite 10mm Round - 15-16 Inch rqtz-spe-str the resulting rock is darkDiscovered 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.