Properties
Mineral group: Cordierite (Dicroite)
Chemistry: Mg2Al4Si5O18
Colour: Blue, violet, brownish
Crystal system: Orthorhombic
Mohs Scale hardness: 7-7.5
Refractive index: 1.553-1.628
Birefringence: +0.072
Specific gravity: 2.35
Other
Water sapphire is a misleading trade name for blue iolite. Mineral name is corderite or Dicroite. Iolite is very appreciated stone in jewelry considering its low price and relative hardness. Very good alternative compare to the much more expensive blue sapphire and tanzanite.
Read/learn more about Iolite under "gemstoneinformation"
Iolite in Healing
Iolite, also known as the "Vikings' Compass Stone," is a fascinating blue-violet stone associated with clarity, intuition, and spiritual insight. It is often used in healing to create balance, strengthen self-confidence, and facilitate spiritual development.
Read/learn more about Iolite – Healing Properties
