pur′ple of Cas′sius(kash′əs, kash′ē əs, kä′sē əs),USA pronunciation
Fine Arta purple pigment precipitated as a sol by the interaction of gold chloride and a solution of stannic acid and stannous chloride: used chiefly in the manufacture of ruby glass, ceramic glazes, and enamels.
named after A. Cassius, 17th-century German physician 1830–40