Ad: Have A Gneiss Day! Geology Rock Geek Humor Face Mask
Gneiss pronounced 'nice' is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. Make others do a double-take with a dose of educational scientific attitude with this word play cotton/polyester face mask with a drawing of gneiss and the geological truism greeting saying "Have A Gneiss Day!" myGeology
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