andradite

[an-druh-dahyt]

noun

a mineral, calcium-iron garnet, Ca3Fe2Si3O2, occurring in brown, green, or black crystals.

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 of andradite

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.
A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public
Frank Bertram Wade

British Dictionary definitions for andradite

andradite

noun

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

Word Origin for andradite

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