It has the outside appearance of Crocidolite fibers, but has been naturally replaced by a chemical action, with colorless macro crystalline Quartz.
During the transformation, the Crocidolite is completely dissolved, with the Quartz taking on its fibrous formations.
This created parallel lines within the gem, which allows the play of light and movement.
The play of light that rolls across the surface is reminiscent to the eye of a cat.
It displays multiple colors and hues in streaks and swirls in many directions, side by side like bold paint strokes.
Several colors and or mixes of colors are caused other than original blue of Crocidolite with the varying amounts of ted oxide of iron. The colors of Pietersite include blues, sty reds, golds and browns. The blues tend to be most dominant and can be found in a vast array of hues from baby blue to dark midnight blue.
Pietersite is found in Namibia, South West Africa.
It has a chemical composition of Si02 and is rated 6.5 - 7 on Mohs Scale of hardness