Source: Australia, Brazil, Ethiopia, Mexico, Peru and United States.
Mineral: Hydrated silica.
Hardness: 5-6.5
Colour: Varying colour
Clarity: They can range from completely transparent to opaque. Some opals can have fractures and surface blemishes.
Treatments: Opal can be treated by impregnation with oil, wax or plastic.
Care and cleaning: You can use warm, soapy water. Opals are sensitive to heat and can dry out or crack.
Birthstone: October
Stone Properties: Enhances creativity and decision making.
