![Iolite Ιολιτης Ιολίτης Iolite Mg2Al4Si5O18 Cordierite precious stone πολύτιμες πέτρες ημιπολίτιμες ημιπολίτιμο ημιπολιτιμο πετρες πολυτιμες semi precious](https://kouzoupis.gr/wp-content/uploads/2019/05/Iolite.png)
Iolite is the gem variety of the mineral Cordierite. It describes the transparent to translucent form of Cordierite, and it has recently become a popular gemstone. Iolite can be light to deep blue, and usually has a purplish tinge to it. Deeper colored stones are more valuable. Iolite is very affordable and durable, and can be used as a substitute for more expensive blue gemstones such as Sapphire. It is named from the Greek “violet”, alluding to the purplish tinge often exhibited by this gemstone.
- Chemical FormulaMg2Al4Si5O18
- ColorBlue, Purple, Gray
- Hardness7.5 - 7.75
- Mineral ClassCordierite