Perhaps the reverse of a jewel, naturalistically enamelled with the story of Diana and Acteon, diameter 3.5cm.
1690 Devonshire Schedule: “A Round openwork plate of Gold Enamel’d in little the story of Acteon”.
To the Romans, Diana was the goddess of hunting. Acteon was a huntsman who spied upon Diana whilst she bathed. On discovering him, the furious goddess turned Acteon into a stag and set his own hunting dogs to kill him.