A Rainbow crystal contains inclusions or internal fractures that show a rainbow when viewed from an angle. These crystals bring rainbow into ones life and are a very special gift from the spirit keeper of the crystal! They help one to deal with sorrow and negativity. They produce the full spectrum of colour, the white light of healing and perfection being dispersed into the individual rays of rainbow. Rainbow crystals are crystals of joy, optimism, and understanding. A Twin crystal symbolizes union with the One, and enhances compatibility between individuals. Encourages encounters with soul mates, and helps attract like-minded people. Twin crystals can help you gain insight into the underlying problems in a relationship, and help work through them. They can generate very positive energy towards improving a relationship. This works for any kind of relationship, not only a man-woman relationship.