I have a carnelian agate intaglio that is said to belong to John Alden, my distant ancestor, who came over on the mayflower as a pilgrim in 1620. It looks like it was not a ring but attached to something unknown. I don't know who was depicted in the carving.
21mm x 19mm
A Carnelian Agate Intaglio,
the oval brownish/red agate carved intaglio depicting a bearded man, within a brass surround, 21 x 19mm.
According to family tradition it is said to depict John Alden, the distant ancestor of the owner, who sailed over on the Mayflower ship to the US as a pilgrim in 1620.