Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The clear variety of cordierite.

from the GNU version of the Collaborative International Dictionary of English

  • n. A silicate of alumina, iron, and magnesia, having a bright blue color and vitreous luster; cordierite. It is remarkable for its dichroism, and is also called dichroite. A variety called Caribbean iolite has a lighter blue color.

from The Century Dictionary and Cyclopedia

  • n. A silicate of magnesium, aluminium, and iron, a mineral of a violet-blue color with a shade of purple or black.

Etymologies

From Ancient Greek ἴον ("violet") +‎ -lite. (Wiktionary)

Examples

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