Rock Crystal (quartz)

Appearance:

Transparent, and colourless

Esoteric beliefs and associations...

Associated with the zodiac sign of Leo, and with the month of April. Rock Crystal acts as both an antenna and an amplifier for subtle energies, including magical forces and spiritual entities. It is often used in spells and rituals to increase the overall power, or to increase the effectiveness of chants and of thought formation. Because it is known for its energy-holding properties, it has been used successfully as a 'battery' for those energies. Different colourations lead to the filtering of any energies entering the stone.

Physical properties...

Chemistry	Silicon dioxide
System/Structure	Hexagonal (prisms)
Refractive Index	1.544 - 1553
Specific Gravity	2.65
Mohs' Hardness	7