White Hart in the context of "The Wilton Diptych"

An emblem is an abstract or representational pictorial image that represents a concept, like a moral truth, or an allegory, or a person, like a monarch or saint.

The Dunstable Swan Jewel is a gold and enamel brooch in the form of a swan made in England or France in about 1400 and now in the British Museum, where it is on display in Room 40. The jewel was excavated in 1965 on the site of Dunstable Friary in Bedfordshire, and is presumed to have been intended as a livery badge given by an important figure to his supporters; the most likely candidate was probably the future Henry V of England, who was Prince of Wales from 1399.

The jewel is a rare medieval example of the then recently developed and fashionable white opaque enamel used in en ronde bosse to almost totally encase an underlying gold form. It is invariably compared to the White Hart badges worn by King Richard II and by the angels surrounding the Virgin Mary in the painted Wilton Diptych of around the same date, where the chains hang freely down.