Gold metal and crystal snake

Not sure if this post belongs here but here it goes…
Found this object in pawnshop. I first found the head/crystal and 5 weeks later found its body, in the same shop. It is heavy but I am not certain of the metal. It does not tarnish. It is about 3cm high. It does have a weird hallmark on the bottom. I thought it could be Swarovski but cant find similar snake. what would its use be. Any information will be welcome.