Hackmanite 6mm Round - 15-16 Inch Origin_Africa and features dark manganese dendrites

and features dark manganese dendrites throughout

often used in healing and meditation and as religious objects in funerary rites and to dispel evil

Ethiopian Opal was first discovered in Ethiopia in 1994

iron or manganese imperfections

Gamma ray irradiation

Hackmanite 6mm Round - 15-16 Inch Origin_Africa and features dark manganese dendritesDiscovered 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.