Hackmanite 8mm Round - 15-16 Inch Blue Peru Opal Orthoceras was an ancient mollusk

Orthoceras was an ancient mollusk that lived over 370 million years ago

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

this unique Madagascar Agate rock specimen is perfect for gift giving or keep for yourself

For labradorite and feng shui

Hackmanite 8mm Round - 15-16 Inch Blue Peru Opal Orthoceras was an ancient molluskDiscovered 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.