Tag: pleochroism

A Writers Guide to Iolite


Known as iolite to gemologist and cordierite to mineralogist, this stone is a magnesium iron aluminium cyclosilicate. (I dare you to say that three times fast.) It’s a transparent stone in colors of violet, blue, gray, and yellow. Iolite most often refers to the violet variety. This gem has a very cool property — pleochroism, the […]

H.R. Sinclair © 2016
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