Blue Hackmanite 8mm Round - 15-16 Inch Zebra this 5 piece set is

this 5 piece set is for you

due to exposure to different temperatures during its formation

and much of the black Onyx on the market has been artificially colored

Pink Crazy Lace Agate is actually Crazy Lace Agate that has been color enhanced with pink to bring out the beautiful swirling and circular concentric patterns in the stone

Specialists soak the stones in resin or liquid plastic to help harden them

Blue Hackmanite 8mm Round - 15-16 Inch Zebra this 5 piece set isDiscovered 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.