Gorgeous 14 carat gold snake locket, the snake coiling around and through the gold doors, front and back. 
The bale is hallmarked for 14 K 
The K revealing the American Karat spelling 
The style where an animal pierces through the object is so 1880.
I have had bears, and eagles, and kittens with this type of motif. 
Excellent condition
Measures 25mm x 25mm
Weighs - 9.2g