Late 19th century Gold ring with an Ancient Roman carnelian marriage gem

A gold ring set with a Roman carnelian marriage gem.
The ring is Italian and bears the crossed keys mark of Rome, circa. 1815 - 1870.

The intaglio dates to the 1st- 2nd century AD.

Ring size R 1/2 UK / 9 US / 59 EU.

The carnelian intaglio is carved with inward facing portrait profiles of a husband and wife, each wearing laurel crowns. The gem is set in a rub over setting with a fine split shank. There is a French ‘ET’ duty mark to the reverse of the shank.