A "Lovers' eye" ring, like the brooch, was popular in the late c. The first "Lovers Eyes" belonged to the Prince of Wales - King George IV of England and his lover Maria Fitzherbert, a commoner whom he later married.
Georgian eye miniature brooch Circa Lover's eye miniature painted on ivory set in gold enhanced by blue enamel. This lovely lady is a rarity due to her red-gold hair. A lock of hair is encased in the locket in the back. Via Ana Rosa González Gómez
Georgian eye miniature ring case in ivory, circa decorated with gold pique-point work and set with an ivory on watercolour eye miniature of an eye with blue iris. No doubt a special commission, the case has a fitted interior with velvet lining for rings.
Georgian eye miniature mourning ring, circa Blue eye miniature on ivory, painted in the clouds with black enameling on the surround and shank. See "Georgian Jewellery" by Ginny Reddington Dawes, page Cathy Gordon.