Amethyst

Appearance:

Transparent; violet or pale red-violet

Esoteric beliefs and associations...

Associated with the zodiac sign of Pisces, the planet Jupiter, the month of February, the Goddess Diana, and with the Gods Bacchus and Dionysus. Strong red colouration indicates physical protection and strength, improved health and courage. With violet or purple colouring, it can aid meditational states of mind.

Physical properties...

Chemistry	Silicon dioxide
System/Structure	Hexagonal (prisms)
Refractive Index	1.544 - 1553
Specific Gravity	2.63 - 2.65
Mohs' Hardness	7