Double Terminated Quartz Crystals are multi-functional; energy moves outward in either direction or in both directions concurrently. They have the capacity to draw or to transmit energy through both ends. "Doubles" are excellent for astral projection and for dreaming- place them under your pillow at night and they can increase and intensify the dream state. They are also excellent for use in mediation.
They can also be used to assist in providing one protection from mental and physical harm. Carrying a double terminated crystal can enable one to maintain ones energy shield.
They symbolize patience and perseverance; this is quite important during healing situations.