The toadstone, also known as bufonite (from
Latin
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
, "toad"), is a mythical stone or
gem that was thought to be found in the head of a
toad
Toad (also known as a hoptoad) is a common name for certain frogs, especially of the family Bufonidae, that are characterized by dry, leathery skin, short legs, and large bumps covering the parotoid glands.
In popular culture (folk taxonomy ...
. It was supposed to be an
antidote
An antidote is a substance that can counteract a form of poisoning. The term ultimately derives from the Greek term φάρμακον ἀντίδοτον ''(pharmakon antidoton)'', "(medicine) given as a remedy". An older term in English which is ...
to poison and in this it is like batrachite, supposedly formed in the heads of frogs. Toadstones were actually the button-like
fossilised teeth of ''
Scheenstia'' (previously ''
Lepidotes''), an extinct genus of
ray-finned fish
Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of sk ...
from the
Jurassic
The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately 143.1 Mya. ...
and
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ...
periods. They appeared to be "stones that are perfect in form" and were set by European jewellers into magical rings and amulets from Medieval times until the 18th century.
Beliefs

From ancient times people associated the fossils with jewels that were set inside the heads of toads. The toad has poison glands in its skin, so it was naturally assumed that they carried their own antidote and that this took the form of a magical stone. They were first recorded by
Pliny the Elder
Gaius Plinius Secundus (AD 23/24 79), known in English as Pliny the Elder ( ), was a Roman Empire, Roman author, Natural history, naturalist, and naval and army commander of the early Roman Empire, and a friend of the Roman emperor, emperor Vesp ...
in the first century.
Like the fossilised shark teeth known as
tonguestones, toadstones were thought to be antidotes for poison and were also used to treat
epilepsy
Epilepsy is a group of Non-communicable disease, non-communicable Neurological disorder, neurological disorders characterized by a tendency for recurrent, unprovoked Seizure, seizures. A seizure is a sudden burst of abnormal electrical activit ...
.
As early as the 14th century, people began to adorn jewelry with toadstones for their
magical abilities. In their folklore, a toadstone was required to be removed from an old toad while the creature was still alive. 17th century
naturalist
Natural history is a domain of inquiry involving organisms, including animals, fungi, and plants, in their natural environment, leaning more towards observational than experimental methods of study. A person who studies natural history is cal ...
Edward Topsell
Edward Topsell (''circa'' 1572 – 1625) was an English cleric and author best remembered for his bestiary.
Topsell was born and educated in Sevenoaks, Kent. He attended Christ's College, Cambridge, earned his B.A. and probably an M.A., as well, ...
wrote that this could be done by setting the toad on a piece of red cloth.
The true toadstone was taken by contemporary jewellers to be no bigger than the nail of a hand and they varied in colour from a whitish brown through green to black, depending on where they were buried.
They were supposedly most effective against poison when worn against the skin, on which occasion they were thought to heat up, sweat and change colour. If a person were bitten by a venomous creature a toadstone would be touched against the affected part to effect a cure. Alternatively
Johannes de Cuba, in his book ''
Gart der Gesundheit'' of 1485, claimed that toadstone would help with kidney disease and earthly happiness.
Loose toadstones were discovered among other gemstones in the Elizabethan
Cheapside Hoard and there are surviving toadstone rings in the
Ashmolean Museum
The Ashmolean Museum of Art and Archaeology () on Beaumont Street in Oxford, England, is Britain's first public museum. Its first building was erected in 1678–1683 to house the cabinet of curiosities that Elias Ashmole gave to the University ...
and the
British Museum
The British Museum is a Museum, public museum dedicated to human history, art and culture located in the Bloomsbury area of London. Its permanent collection of eight million works is the largest in the world. It documents the story of human cu ...
.
Allusions in literature
The toadstone is
alluded to by Duke Senior in
Shakespeare's ''
As You Like It
''As You Like It'' is a pastoral Shakespearean comedy, comedy by William Shakespeare believed to have been written in 1599 and first published in the First Folio in 1623. The play's first performance is uncertain, though a performance at Wil ...
'' (1599), in Act 2, Scene 1, lines 12 to 14:
Sweet are the uses of adversity;
Which, like the toad, ugly and venomous,
Wears yet a precious jewel in his head.
In
James Branch Cabell's short story "Balthazar's Daughter" (collected in ''The Certain Hour'') and its subsequent play adaptation ''The Jewel Merchants'',
Alessandro de Medici attempts to seduce Graciosa by listing various precious jewels in his possession, including "jewels cut from the brain of a toad".
Jewelry
Some toadstones were used in jewelry, including on a crown held at
Aachen Cathedral
Aachen Cathedral () is a Catholic Church, Catholic church in Aachen, Germany and the cathedral of the Diocese of Aachen.
One of the oldest cathedral buildings in Europe, it was constructed as the royal chapel of the Palace of Aachen of Holy Rom ...
used to coronate
Charles IV, Holy Roman Emperor.
[Gregorová, R., Bohatý, M., Stehlíková, D., Duffin, Ch., 2020: "Crapaudine" (Scheenstia teeth) - the jewel of Kings. – Acta Musei Moraviae, Scientiae geologicae, 105, 2, 277–294 (with Czech summary).]
See also
*
Bezoar
A bezoar stone ( ) is a mass often found trapped in the gastrointestinal system, though it can occur in other locations. A pseudobezoar is an indigestible object introduced intentionally into the digestive system.
There are several varieties o ...
*
Biomineralization
Biomineralization, also written biomineralisation, is the process by which living organisms produce minerals, often resulting in hardened or stiffened '' mineralized tissues''. It is an extremely widespread phenomenon: all six taxonomic kingd ...
References
{{Reflist, 30em
Further reading
* ''New Oxford American Dictionary'', under the entry "toadstone".
* ''The Complete Works of William Shakespeare'' by Crown Publishers Inc
External links
"Toadstones: A Noteto ''
Pseudodoxia Epidemica'', Book III, chapter 13"
A collection of notesmaintained by James Eason of the University of Chicago comprising excerpts from Thomas Nicols and other authors
''New York Times'' reference, 5 October 1890Whitehurst, John (1713–1788). ''An Inquiry into the Original State and Formation of the Earth'', pp. 184–5, 190 and ff).
Folklore
Lepisosteiformes
Magic items
Mythological substances
Toads
Fossils