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====Pyrope–spessartine (blue garnet or color-change garnet)==== Blue pyrope–spessartine garnets were discovered in the late 1990s in Bekily, [[Madagascar]]. This type has also been found in parts of the [[United States]], [[Russia]], [[Kenya]], [[Tanzania]], and [[Turkey]]. It changes color from blue-green to purple depending on the [[color temperature]] of viewing light, as a result of the relatively high amounts of [[vanadium]] (about 1 wt.% V<sub>2</sub>O<sub>3</sub>).<ref name="blue">{{cite journal |last1=Schmetzer |first1=Karl |last2=Bernhardt |first2=Heinz-Jürgen |title=Garnets from Madagascar with a color change from blue-green to purple |journal=Gems & Gemology |date=Winter 1999 |volume=35 |issue=4 |pages=196–201 |doi=10.5741/GEMS.35.4.196 |url=https://www.gia.edu/doc/WN99A4.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://www.gia.edu/doc/WN99A4.pdf |archive-date=2022-10-09 |url-status=live |access-date=7 December 2020|doi-access=free }}</ref> Other varieties of color-changing garnets exist. In daylight, their color ranges from shades of green, beige, brown, gray, and blue, but in incandescent light, they appear a reddish or purplish/pink color.<ref>{{Cite web |title=Color Change Garnet Value, Price, and Jewelry Information - Gem Society |url=https://www.gemsociety.org/article/color-change-garnet/ |access-date=2022-10-13 |website=International Gem Society |language=en-US}}</ref> This is the rarest type of garnet. Because of its color-changing quality, this kind of garnet resembles [[Chrysoberyl#Alexandrite|alexandrite]].<ref>{{cite journal |last1=Krambrock |first1=K. |last2=Guimarães |first2=F. S. |last3=Pinheiro |first3=M. V. B. |last4=Paniago |first4=R. |last5=Righi |first5=A. |last6=Persiano |first6=A. I. C. |last7=Karfunkel |first7=J. |last8=Hoover |first8=D. B. |title=Purplish-red almandine garnets with alexandrite-like effect: causes of colors and color-enhancing treatments |journal=Physics and Chemistry of Minerals |date=July 2013 |volume=40 |issue=7 |pages=555–562 |doi=10.1007/s00269-013-0592-6|bibcode=2013PCM....40..555K |s2cid=95448333 }}</ref>
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