What does "iolite" mean?

The clear variety of cordierite, sometimes used as a gem.

What is a synonym for "iolite"?

Common synonyms include: cordierite.

/ˈaɪəˌlaɪt/ noun

noun ·Rare ·Advanced level

Noun

1
The clear variety of cordierite, sometimes used as a gem. countable, uncountable

From Ancient Greek ἴον (íon, “violet”) + -lite.