Color Names

Iolite

Soft blue of the iolite gem, a mineral often mistaken for sapphire.

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Iolite is a muted blue, close to periwinkle.

It can be described as muted, dull, matte and soft.

Set in black, because black reads best on it.

Iolite

Cordierite

Cordierite (mineralogy) or iolite (gemology) is a magnesium iron aluminium cyclosilicate. Iron is almost always present, and a solid solution exists between Mg-rich cordierite and Fe-rich sekaninaite with a series formula: (Mg,Fe)2Al3(Si5AlO18) to (Fe,Mg)2Al3(Si5AlO18). A high-temperature polymorph exists, indialite, which is isostructural with beryl and has a random distribution of Al in the (Si,Al)6O18 rings. Cordierite is also synthesized and used in high temperature applications such as catalytic converters and pizza stones.

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iolite

Noun

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