hyalite

noun
hy·​a·​lite | \ˈhī-ə-ˌlīt \

Definition of hyalite 

: a colorless opal that is clear as glass or sometimes translucent or whitish

First Known Use of hyalite

1794, in the meaning defined above

History and Etymology for hyalite

German Hyalit, from Greek hyalos

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The first known use of hyalite was in 1794

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