Sources: Australia, Cambodia, China, Ethiopia, Kenya, Madagascar, Sri Lanka, Tanzania
Mineral: Corundum
Hardness: 9
Colour: Every colour apart from red
Clarity: They usually have inclusions. This is a property of these stones and it can increase the value.
Treatments: Most are not treated, however high temperature treatments are used to improve the colour and enhance the clarity.
Care and Cleaning: Warm and soapy water is always safe. For untreated stones, an ultrasonic or steam cleaner can be used.
Birthstone: September
Stone Properties: Protects from negative energy and restores and calms the mind.
