Apatite is a calcium phosphate mineral with a hardness of 5. Its crystal system is hexagonal (trigonal). It is found in Brazil, Burma, Madagascar, Sri Lanka, India, Mexico, Greenland, Canada and the USA. Its name is derived from a Greek word meaning ‘to deceive’. This is because of the variety of colors and formations in which this stone occurs, making it easy to mistake it for other minerals. It can be yellow, blue, green, brown, grey or colourless. The largest known Apatite deposit is in Kirovsk, Russia. Large individual crystals of up to 200 kilograms are found in Renfrew, Ontario, Canada.
The Apatite stones used for metaphysical purpose are primarily the higher-quality, attractively formed crystal pieces in blue, green and gold.