A fine Neo-classical oyster shell carving of a lion, circa 1820, set to a gold ring. The carving is after the antique, realistically depicting a prowling lion with swishing tail. In mythology the lion was the beast of Bacchus, God of the Vine. Oyster shell was a particularly difficult medium for the gem engraver to use as it is so thin and to create an oyster shell carving on this miniature scale is quite remarkable. The ring is size M [US 6] and the cameo measures 2/3 of an inch by 1/2 an inch. Such a rare survivor.