Adorable little 18 carat ouroboros split ring, 
Cute little happy face. 
Measuring in at just under size 2 on a ring stick, unless you have tiny fingers this would be a midi ring if you want to wear it on your hand, or can be used as a chain extender or charm holder.
 
weighs - 1.55g
diameter - 18mm
english early 19th century
excellent condition