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tanzanite

[tan-zuh-nahyt] /ˈtæn zəˌnaɪt/
noun
1.
Mineralogy. a variety of zoisite valued as a gem for its purplish-blue color and strong pleochroism.
Origin of tanzanite
1965-1970
1965-70; named after Tanzania, where found; see -ite1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Word Origin and History for tanzanite
n.

violet-blue gemstone, 1968, named by Henry B. Platt, vice president of Tiffany & Co., because the stone was discovered in the African nation of Tanzania.

Online Etymology Dictionary, © 2010 Douglas Harper
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