purple of Cassius

purple of Cas·​sius

-ˈkash(ē)əs,

-ˈkäsēəs

: a purple pigment prepared usually by precipitation from solutions of gold chloride and stannous chloride, consisting of colloidal gold and stannic oxide, and used chiefly in coloring ceramic glazes and ruby glass and in a very delicate test for gold

Word History

Etymology

after Andreas Cassius †1673? German physician

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