Golden Beryl, the same family of stones as aquamarine and works on a similar level (communication) but a different frequency (thought). Helidor activates both the solar plexus and golden aura of the crown chakra. In such the crystal resonates to personal power, personal intellect and the value of sharing intellect. Similarly it works in reverse too, allowing one to receive on the same frequency and some cases to those more adept -hold dialog over great distances.
Uses: Compassion and Sympathy via "Understanding". Purification, Cleansing, Astral communication. Liver, Spleen, Pancreas.