Stunning antique high carat gold black enamel snake bracelet, his head set with an oval emerald, with old cut diamond surround, and ruby cabochon eyes.
The snake opens via a sprung hinge, the head slotting through the hooked tail, and is kept in place by the pressure of the spring.
As it has a spring the bracelet can be worn along various points of the arm as shown.
Circa 1860 
In good antique condition. The black enamel has some wear.