Opal is a hydrated amorphous form of silica; its water content may range from 3 to 21% by weight but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are classed as minerals.
Opal is the product of seasonal rains that drenched dry ground in regions such as Australia’s semi-desert “outback.” The showers soaked deep into ancient underground rock, carrying dissolved silica downward. During dry periods, much of the water evaporated, leaving solid deposits of silica in the cracks and between the layers of underground sedimentary rock. The silica deposits formed opal.
Mohs Hardness – 5.0 to 6.5
Chakras - Heart Chakra
Birthstone - October
Element - Water
Color – Multi
Encourages both freedom and independence. Opal enhances cosmic consciousness and induces psychic and mystical visions. It stimulates originality and creativity. Helps to release anger and claim self worth, aiding in accessing and expressing one's true self.