Iolite, both yellow and blue directions. Photo by David Abercrombie. Licensed under CC By-SA 2.0.
Translucent Blue Iolite Rough
Iolite, both yellow and blue directions. Photo by David Abercrombie. Licensed under CC By-SA 2.0.
Article: What is Gemstone Pleochroism?
Credit: David Abercrombie
| Gemstone | Iolite, Cordierite |
| Natural or man made | Natural |
| Gem State | Rough |
| Color | Blue |
| Transparency | Translucent |