Moonstone (feldspar)

Appearance:

Turbid/transparent; pale sheen, yellow, colourless.

Common variations...

Albite moonstone, microcline moonstone and labradorite moonstone.

Common confusions......

Chalcedony and heat-treated amethyst.

Esoteric beliefs and associations...

Associated with the Moon, the direction of West, the month of June, and with the Goddesses Diana, Isis and Selene.

Physical properties...

Chemistry	Potassium aluminium silicate
System/Structure	Monoclinic (prismatic)
Refractive Index	1.520 - 1.525
Specific Gravity	2.56 - 2.62
Mohs' Hardness	6.0 - 6.5