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Batrachites were gemstones, supposedly found in frogs, to which ancient physicians and naturalists attributed the virtue of resisting poison. They resembled frogs in color.

Toadstone is a similar mythical stone, supposed to be found in toads.

The term batrachite is also used for a batrachian (or frog) fossil.


  1.  This article incorporates text from a publication now in the public domainChambers, Ephraim, ed. (1728). "article name needed". Cyclopædia, or an Universal Dictionary of Arts and Sciences (first ed.). James and John Knapton, et al. 
  1. "Batrachite". Oxford English Dictionary. URL accessed 2006-03-05.