Gorgeous large oval onyx pendant, the front adorned with a gold coiled snake set with very attractive, chunky rose cut diamonds, graduated to fit his body shape, set into the gold. The snake is holding a gold stem in his mouth, set with a large natural pearl, and if you look at his face from the side you can see his tongue peeping out.
Hung from an 18 carat gold bail set with tiny rose cuts
 
The back is set with a removable glass locket panel (so you can add your own photo or hair)
 
Weight - 22.5g
Measures - 45mm x 35mm
Date circa 1870 - possibly french (the snake face looks french) 
Excellent condition.