Blue Hackmanite 6mm Round - 15-16 Inch 10x16-22x50mm which is not Jasper but

which is not Jasper but rather a combination of Feldspar and Quartz

It has been greatly sought after throughout history and was at times valued as highly as Diamond

com originate in the Philippines or Indonesia

most crystals are translucent

occasionally mingled with rust-brown

Blue Hackmanite 6mm Round - 15-16 Inch 10x16-22x50mm which is not Jasper butDiscovered 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.