Cordierite (Iolite)

Cordierite was named in 1813 after the French president Louis Antoine Cordier. Cordierite is very often called iolite, which was given to it because of its violet blue colour, Greek ion=violet, lithos=stone.

Cordierite is often found in Sri Lanka, India, Madagascar and Brazil. Depending on the angle of view, cordierite is violet blue, smoky yellow or yellow.

Mineral class
formula: (Mg,Fe)2 Al3(AlSi5O18) + Mn,Na,Zr

Mohs hardness: 7 - 7.5
density: 2.58 - 2.66
fissility: imperfect, conchoidal fracture
Line colour: white
Transparency: transparent to translucent

Healing Effects
Perseverance, stamina, self-confidence, steadfastness, the ability to overcome, determination to take responsibility