Obs. [a. L. iasponyx (Pliny), a. Gr. ἰασπόνυξ, f. ἴασπ-ις JASPER + ὄνυξ ONYX.] An onyx stone partaking of the characters of jasper; ‘an old name for clouded jasper’ (A. H. Chester).
1616. Bullokar, Iasponyx, a precious stone, white of colour, and hauing red strakes.
1748. Sir J. Hill, Hist. Fossils, 492*. The Jasponyx of the antients, Or Horney Onyx with green Zones.
