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sunstone

[suhn-stohn] /ˈsʌnˌstoʊn/
noun
1.
a reddish variety of oligoclase feldspar, used as a gem, having a red and bright-yellow play of color.
Origin of sunstone
1350-1400
1350-1400; Middle English; see sun, stone
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for sun stone

sunstone

/ˈsʌnˌstəʊn/
noun
1.
another name for aventurine (sense 2)
Word Origin
C17: so called because it contains red and gold flecks which reflect the light
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
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3
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