Tiger Eye or (or Tiger's Eye or Cats Eye) originally comes from Star Chrysoberyl or Crocidolite. It is normally blue, but oxidation causes the brown color. In general, Tiger Eye can help you to see what is ahead. It is a stone that promotes weather, curves impulsiveness, and can aid you in decision making.
Tiger's Eye is an optimistic stone, so it has been said to be helpful for depression, and to help one refocus on what is important. Tiger Eye also helps with strengh and courage.
Blue Tiger's Eye, also known by some as Hawks eye, is a beautiful deep blue/black stone that looks like a darker version of the traditional yellowish/brown tiger eye stone. Blue Tiger eye is useful in increasing energy. it is said to assist in obtaining a meditative state, and it also releases negative energy.