Obs. Also cal-. [f. L. chalcedoni-us CHALCEDONY + -AN.] = CHALCEDONY.
1622–62. Heylin, Cosmogr., II. (1682), 54. Chalcedonians also of such bigness, that whole Drinking-cups are made of them.
1750. trans. Leonardus’ Mirr. Stones, 81. The Calcedonian pale white, and also the hardest dun?
