A ray of light is a metaphor for divine energy. Crystals play with light, direct it, concentrate it and magnify it. That is why a gem sparkles when you hold it in your hand. Now, imagine that the sparkle you see when you hold Casa Crystals in your hand, or on your body is not the sparkle of light, but instead it is divine healing energy entering your body. As the energy enters your body it re tunes the energies that are there, returning them to the vibration of peace and harmony that you are when your spirit is not in a body. Your body is an imperfect container created by you and for you as a learning tool. The healing that you receive from the entities of the Casa through these crystals is part of that lesson. The healing will remind you, both consciously and unconsciously of what you willingly forgot when you chose to accept the Adventure of Earth.
You can work with Casa Crystals in any way that you will allow. They will provide their returning function whether or not you use them with intention. However, when used with intention, Casa Crystals become much more powerful, and you will begin to see manifold and manifest change in your life.
Your instinct is to push away that which would help you. This is a normal response because when you encounter a higher vibration it works on you like sandpaper against your skin. You shy away from this discomfort naturally to avoid the pain. But the fine gem must be cut and polished from the rough rock, and in this process suffer the pain and waste of the grinding wheel. So too must you endeavor to keep yourself focused to stay against the grinding wheel, to stay in the divine healing current so that you can be that fine sparkling gem that you were meant to be.