Lapis alectorius

A lapis alectorius, alectoria, alectorius, cock stone or capon stone is a non-precious stone found in the gizzard of capons (young, castrated roosters). In magic it is believed to be an amulet, granting the wearer a heightened sense of courage and boldness. These properties are unproven according to modern science.{{Cite journal|last=Forbes|first=T. R.|date=1973|title=The capon stone.|journal=Bulletin of the New York Academy of Medicine|volume=49|issue=1|pages=48–51|issn=0028-7091|pmc=1806909|pmid=4565384}}{{Cite journal|last=John Duffin|first=Christopher|date=2007-12-01|title=Alectorius: The Cock's Stone|url=https://doi.org/10.1080/00155870701621814|journal=Folklore|volume=118|issue=3|pages=325–341|doi=10.1080/00155870701621814|s2cid=216644991|issn=0015-587X}}{{Cite journal|last1=Carrasco|first1=Joaquin|last2=Duffin|first2=Christopher J.|date=2017-01-01|title=Alectorius: a parasympathomimetic stone?|url=https://sp.lyellcollection.org/content/452/1/155|journal=Geological Society, London, Special Publications|language=en|volume=452|issue=1|pages=155–162|doi=10.1144/SP452.15|bibcode=2017GSLSP.452..155C|s2cid=133456059|issn=0305-8719}}