A very pretty and feminine ring!
Designed as a quatrefoil shape with four opals edged with emeralds in a gold rub over setting.
The back is very pretty, with trypical rayed pattern of the period - 1780- modelled in a high carat gold, with pretty scrolled, split shoulder shank.
 
Weighs - 2.1g
size just over a 5 and can be sized
english circa 1780
face measures - 13mm x 14mm
 
In excellent condition