Rare Stuart crystal foiled pear drop earrings with gold wire cyphers set in high carat gold cut down settings.c.1730.
Later c. high carat gold shepherds hook ear wires of quality.
'Stuart crystal' jewels (as we now describe them)were fashionably worn as slides and rings from the 1680s through the first half of the eighteenth century but they are much  less commonly seen in earring form.