Hackmanite 8mm Round - 15-16 Inch 5pf6052026 Picture Jasper is a form

Picture Jasper is a form of brown Jasper characterized by its unique banding and flow patterns created by petrified or silicate mud and occasional dendritic inclusions

and many others

Outback Jasper is a milky white to light pink to golden brown stone

Apatite can exhibit chatoyancy — an uncommon optical phenomenon in some stones that resembles the light reflection of a cat’s eye

Hackmanite 8mm Round - 15-16 Inch 5pf6052026 Picture Jasper is a formDiscovered 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.