Blue Hackmanite 8mm Round - 15-16 Inch Price $7-$50 Historically

Historically

It is a phyllosilicate composed of silicon

The name of this particular calcite probably came about because of its distinct ocean blue and tan bands

Dalmation Jasper is the trade name for Dalmation Stone

bubbles and crystal-rich layers that form as lava flows onto the surface of stone —

Blue Hackmanite 8mm Round - 15-16 Inch Price $7-$50 HistoricallyDiscovered 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.