Ιολιτης Ιολίτης Iolite Mg2Al4Si5O18 Cordierite precious stone πολύτιμες πέτρες ημιπολίτιμες ημιπολίτιμο ημιπολιτιμο πετρες πολυτιμες semi precious

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

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