Blue Hackmanite 6mm Round - 15-16 Inch Stone Type_Rhyolite Green Aventurine

Green Aventurine

which may range from yellow to green to olive green to brownish green

Prehnite was the first mineral to be named after a person: its discoverer

Golden Blood Quartz is a clear to milky to white silicon dioxide mineral

and we offer it when we can

Blue Hackmanite 6mm Round - 15-16 Inch Stone Type_Rhyolite Green AventurineDiscovered 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.