According to Allison Fox, Curator for Archaeology at Manx National Heritage:
“The ring is small and quite delicate in form, but of a high quality and intact. The quality suggests that it was made for, or on behalf of, an individual of high status. It is unlikely that we will be able to establish for certain who owned the ring or whom it commemorated, but there is a possibility that it may have been associated with the Stanley family, previously Lords of Man. The initials JD may refer to James Stanley, 7th Earl of Derby and Lord of Man, a supporter of the Royalist cause in the Civil War