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Often used as a gemstone
Answer for the clue "Often used as a gemstone ", 10 letters:
cordierite
Alternative clues for the word cordierite
Word definitions for cordierite in dictionaries
Wiktionary
Word definitions in Wiktionary
n. (context mineral English) A magnesium iron aluminium cyclosilicate.
WordNet
Word definitions in WordNet
n. a blue mineral of magnesium and iron and aluminum and silicon and oxygen; often used as a gemstone
Wikipedia
Word definitions in Wikipedia
"Praseolite" redirects here. For prasiolite, see Vermarine 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 ...
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Cordierite \Cor"di*er*ite\ (k[^o]r"d[i^]*[~e]r*[imac]t), n. [Named after the geologist Cordier.] (Min.) See Iolite .
Usage examples of cordierite.
Iol: Also known as iolite, cordierite, or violet stone (despite its usual overall hue of blue), this semiprecious stone is usually cut into faceted gemstones to best display its color change when viewed from different directions.