Who is this female figure with snake and skull,?

Trying to find out who this golden figure represents: A female wearing what looks to be ancient Greek or Roman long robe. Her hands are stretched outward. The right hand holds a snake and the left holds what looks like a skull.
Small photo at http://img.villagephotos.com/p/2003-10/417038/001crop.jpg

hillary

Snake Rattler Skull Ring