An Etymological Dictionary of the German Language, T (1891)
by Friedrich Kluge, translated by John Francis Davis
Topas
Friedrich Kluge2509009An Etymological Dictionary of the German Language, T — Topas1891John Francis Davis

Topas, m., ‘topaz,’ from the equiv. MidHG. topâȥe (topazîe), m.; derived, like most of the terms for precious stones, through a Lat. medium from Gr. Comp. Gr. τόπαζος, τοπάζιον, ‘topaz.’