The Luck of the Irish must be with you! You’re right. The gold ring with an emerald stone belonged to Robert Emmet and his revolutionary sons, Thomas Addis and Robert. Known as Robert Emmet’s United Irishmen seal-ring, it was used to validate co-conspirators. The Indian emerald was a gift to his father. The design was cut in Dublin in the 1790’s and shows a woman playing a harp with pikes and a liberty cap in the background.