Product details
100% Natural – Not treated in any way.
Rare Collectors Gem
Suitable for Museums,Institutions and Students of Gemology.
Will make a Gorgeous Ring or Pendent accented with Diamonds.
Extremely Difficult to cut & polish
Gem with High Lustre and Good Clarity.
Large Sizes are Extremely Rare!
A Gem of Lasting Beauty.
R I: 522 – 1.578
Hardness: 7 – 7.5
Chemical comp: (Mg, Fe2) Al4Si5O18
Density: 2.53 – 2.78
Crystal Group: Orthorhomic
Iolite comes in different colors in different directions in the crystal. An Iolite cube will look violet blue, like Tanzanite from one side, colorless from the other, and a yellow from top.
Iolites are extremely difficult to cut- to display the best color, due to the Pleochroism When Leif Eriksson the legendary Viking explorers ventured into the Atlantic, the Viking mariners used thin pieces of it as the world’s first polarizing filter, to determine their position for navigation. Extreme Pleochroism – is the property which made iolite so valuable to the Vikings.
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