Last of all he showed me a toadstone amulet set in silver, a charm to prevent and ward off the spells of fairies.
The lead veins exist in the calcareous strata, but disappear at the limits of the toadstone.
The toadstone was supposed to be specially powerful against witchcraft and poison.
Dark and weird are the legends relating to the power of the toadstone, that amulet so highly prized by witches and astrologers.
The setting is of silver, and the jewel which it carries is called a toadstone.
Popular names for them are "whinstone," "greenstone," "toadstone" and "trap."