Chemical Formula: KAlSi3O8 (chemical formula for orthoclase feldspar – other feldspars are also classified as moonstone)
Moonstone is a variety of feldspar, an important group of silicate minerals. Feldspars are the most common minerals in the Earth’s crust, and a major component of most igneous (volcanic) rocks. Other well-known feldspars include labradorite, sunstone and amazonite. Moonstone is probably the most popular and best known of this group. It is colourless, white, yellow, pink or brown. The name comes from its white, blue or multi-coloured (rainbow) schiller or “shimmer”, resembling moonlight. This is the result of thin layering of translucent material with another related variety of feldspar, developing through internal chemical separation during the crystallisation process. Moonstone is not one individual mineral, but occurs in a number of different varieties of feldspar, including orthoclase (the most common moonstone), anorthoclase, oligoclase, sanidine, and albite, explaining why there can be so much variation in appearance. Opaque versions of some of these feldspars are milled and used in making porcelain. The name spectrolite, which is sometimes used to describe rainbow moonstone, is actually a trade name for a variety of labradorite.
Primary Birthstone for Cancer; Secondary Birthstone for Libra and Scorpio
Aligns with the Crown Chakra
Properties: Moonstone has long been a stone of lovers. It is associated with the moon and the element water, and is a particularly feminine mineral, often linked with goddess worship. It is sometimes referred to as the “visionary stone”, as it awakens and develops our psychic potential, as well as opening us to our spirituality, helping us to create a connection with the Divine. The iridscent shimmer aids introspection, inner vision, self-reflection and self-awareness, supporting our personal development. It is considered to be the primary stone for female fertility, and is also sometimes used as an aid in the birthing process.