Blue Hackmanite 8mm Round - 15-16 Inch Discontinued inclusions of Goethite or Hematite

inclusions of Goethite or Hematite refract the light between the layers of the crystal

making it the hardest silicate mineral

laced with bands or swirls of brighter blue

stabilizes and regenerates

Blue Hackmanite 8mm Round - 15-16 Inch Discontinued inclusions of Goethite or HematiteDiscovered 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.