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andradite

[an-druh-dahyt]
noun
  1. a mineral, calcium-iron garnet, Ca3Fe2Si3O2, occurring in brown, green, or black crystals.
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Origin of andradite

1830–40; named after J. B. de Andrada e Silva; see -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for andradite

Historical Examples

  • The andradite garnets furnish the brilliant, nearly emerald green demantoids (so often called "olivine" by the trade).

    A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public

    Frank Bertram Wade

  • Andradite garnet furnishes brilliant green stones, which have been incorrectly named "Olivines" by the trade.

British Dictionary definitions for andradite

andradite

noun
  1. a yellow, green, or brownish-black garnet that consists of calcium iron silicate and is used as a gemstone. Formula: Ca 3 Fe 2 (SiO 4) 3
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Word Origin

C19: named after J. B. d' Andrada e Silva (1763–1838), Brazilian mineralogist; see -ite 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012