pyrope

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py·rope

 (pī′rōp′)
n.
A deep red garnet, Mg3Al2Si3O12, used as a gem.

[Middle English pirope, from Old French, from Latin pyrōpum, gold-bronze alloy, from Greek purōpos, fiery, kind of red bronze : puro-, pyro- + ōps, ōp-, eye, face; see okw- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

pyrope

(ˈpaɪrəʊp)
n
(Minerals) a deep yellowish-red garnet that consists of magnesium aluminium silicate and is used as a gemstone. Formula: Mg3Al2(SiO4)3
[C14 (used loosely of a red gem; modern sense C19): from Old French pirope, from Latin pyrōpus bronze, from Greek purōpus fiery-eyed, from pur fire + ōps eye]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

py•rope

(ˈpaɪ roʊp)

n.
a mineral, magnesium-aluminum garnet, Mg3Al2Si3O12, occurring in crystals of varying shades of red, and frequently used as a gem.
[1300–50; Middle English pirope < Latin pyrōpus gold-bronze < Greek pyrōpós literally, fiery-eyed]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pyrope - a deep red garnet used as a gemstone
garnet - any of a group of hard glassy minerals (silicates of various metals) used as gemstones and as an abrasive
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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Although magnetic signatures of known kimberlites are not indicative of diamond content, the potential of the Stein cluster of high interest targets is further reinforced by heavy mineral samples collected down ice which contain indicator mineral grains that are indicative of diamond inclusion chemistry showing high chrome, low calcium G10D pyrope garnets. Stein is a permitted, advanced diamond exploration project having the benefit of numerous successive exploration campaigns and over $1.5 million in previous expenditures.
The cushion-shaped brooch pictured here is set with pyrope garnets, which are the commonest variety of this gemstone.
Pyrope garnets are one of the best indicator minerals for the presence of kimberlites.