Alexandrite is a variety of Chrysoberyl which displays different colors in different directions when viewed via transmitted light.  Viewed in sunlight Alexandrite appears green and under artificial light it can appear red-violet.  Only the more expensive gemstones of Alexandrite show this unique color change.  From working with this rare stone I feel that it connects the third eye chakra, heart and 1st chakra.  Alexandrite is said to have regenerative properties as well as assisting one in balancing the self.  Manifesting your dreams and desires is also a wonderful benefit of Alexandrite.  These stones offer a slight color change.