Of Ceraunio. cap. 32.
CEraunius is a stone like to Cristall, and is infected with bliewe coulour, and is in Germania. Another is of Spaine, and shineth as fire. These stones fall out of the place of Thunder. And it is sayde that they helpe against the strength of lightening, as Isidore sayth there. The same is said in the Lapidari. Where it is said that when it thundreth horribly, and the firie aire lightneth, and when clowds smite together, their stones falleth from heauen. Who so beareth this stone chastely, shall not be smitten with lightning, nor house nor Towne where this stone is therein. Either hath vertue of helping in battailes, and to haue mastrie in warre, and in causes of strife, and to make swéete sléepes, as it is sayd there.