A Poisoner's Ring were a type of ring worn by politicians and diplomats[1]
Produced by a wide variety of artisans, a poisoner's ring was any ring that outwardly appeared as a common piece of jewelry, but was capable of delivering a dose of poison. By hollowing out the largest feature on the ring (perhaps a jewel, or signet face), the resulting cavity could hold a dose of poison; by means of a painstakingly crafted hinge, the wearer could use specific hand motions to access the space within.[1]
With practice, the wearer could deposit the the fatal cargo into a cut or bowl with little chance of being noticed.[1]
Sources
- Desperate Allies (First mentioned)