In the art of Feng Shui - it is suggested to place quartz crystal in the rooms throughout one's house ~
Quartz crystal is a very powerful energy activator. The energy of the quartz crystal can be amplified by a person's thoughts and feelings. Placing a crystal in the corner of a room will encourage the universal life force to flow through the room freely. If the energy does not flow freely in a room it can affect health and thoughts ~

Clear quartz crystals have been used for centuries in healing. Egyptians used them in pyramids to attract the power contained in light. Their triangular shapes held mystical appeal. American Indians have long revered the crystal as a sacred symbol of light. In the Tibetan culture, crystals are considered sacred objects that are empowered with the elements ~