Encyclopædia Britannica, First Edition/Jasponyx
Jasponyx, in natural hiſtory, the pureſt horn coloured onyx, with beautiful green zones, which are compoſed of the genuine matter of the fineſt jaſpers. See Jasper and Onyx.
Jasponyx, in natural hiſtory, the pureſt horn coloured onyx, with beautiful green zones, which are compoſed of the genuine matter of the fineſt jaſpers. See Jasper and Onyx.