The proper name for Iolite is Cordierite, as the gemstone was originally named after the geologist Pierre Cordier.
The word iolite comes from the Greek ‘ion’ meaning ‘violet’. Iolite is similar to tanzanite in that it is strongly pleochroic. However, unlike tanzanite, iolite has a very long history. Early Viking navigators used thin slices of iolite as polarizing filters to protect their eyes when checking the position of the sun; like sunglasses.
Iolite is said to eliminate conflict in a relationship and to help improve the liver function.
Where is iolite mined?
Iolite is currently being mined in Sri Lanka, Kenya, Tanzania, Madagascar, India, Brazil, Norway and Finland.
Iolite is 7 to 7.5 on the Mohs scale.
Varities of Blue, Violet and Blue-Green.