An emerald and two diamond-set 18th century gold ring

An emerald and two diamond-set 18th century gold ring, size M 1/2, an eight square-shaped garnet-set 18th century gold ring, size L, a George III gold cluster ring set with a diamond and emeralds (some damaged), Birmingham marks for 1788, size N 1/2 and a George III red stone and half pearl-mounted gold cluster ring with pierced shoulders, size P