Kyanite

Kyanite is a fibrous, dark blue crystal gem most commonly found in quartz.  Kyanite has a beautiful cat's eye chatoyancy effect that causes the stone to shimmer from within. In metamorphic rocks, Kyanite is a good indicator that the rock has undergone tremendous heat and high pressure. Kyanite is said to be an excellent stone for meditation, as it is tranquil and amplifies spiritual energy.