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achroite

noun
ach·​ro·​ite | \ˈa-krə-¦wīt\
plural -s

Definition of achroite 

1 : a colorless variety of tourmaline

2 : a gem cut from achroite

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First Known Use of achroite

1849, in the meaning defined at sense 1

History and Etymology for achroite

German achroit, from achro- + -it -ite

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The first known use of achroite was in 1849

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