A crystal with three, primary, seven-sided faces and three secondary triangular faces between them. A Dow crystal has all the properties of a channelling crystal, but can also transmit energy and information. It is the crystal for creativity and service to humanity through both spiritual and mystical pursuits. It is considered one of the "Twelve Master Crystals" and is a powerful teaching and healing crystal. Excellent exercise is to sit with a friend, each of you programme the crystal with a clear thought/message and then swop over and see if you can get the information. Regular practice with partner/friend will speed up your understanding of crystals rapidly & heighten intuition.