iolite

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

• IPA^(key): /ˈaɪəˌlaɪt/

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iolite (countable and uncountable, plural iolites)

1. (gemology) The clear variety of cordierite, sometimes used as a gem.

• cordierite
• dichroite

• David Barthelmy (1997–2025), “Iolite”, in Webmineral Mineralogy Database.
• “iolite”, in Mindat.org‎^[1], Hudson Institute of Mineralogy, 2000–2025.