Kyanite is a mineral found in metamorphic rocks. It most often forms from the high pressure alteration of clay minerals. Kyanite's habit is a bladed crystal although it, sometimes occurs as radiating masses of crystals.
It has a lot of different colors, but this are the more common: blue, white, rarely green, gray, yellow, and black.
I like this rock because it has amazing colors and I think this rock is so weird so maybe no one knows it.