An essay about the origine & virtues of gems. : Wherein are propos'd and historically illustrated some conjectures about the consistence of the matter of precious stones, and the subjects wherein their chiefest virtues reside. By the Honourable Robert Boyle, Esq; Fellow of the Royal Society.

Licence: Public Domain Mark

Credit: An essay about the origine & virtues of gems. : Wherein are propos'd and historically illustrated some conjectures about the consistence of the matter of precious stones, and the subjects wherein their chiefest virtues reside. By the Honourable Robert Boyle, Esq; Fellow of the Royal Society. Source: Wellcome Collection.