Please Help -- What is this?

[CourseEight]

Hello all --

I recently got this, but have no idea what it is. I doubt its a weapon, but I can't think of what it might be. It's brass, made in two pieces, with the rod threaded and screwing into the "head." On the head part, there is a seel piece inserted as shown, almost like a giant safety razor. The stones appear to be genuine, as opposed to plastic.

Any help would be greatly appreciated!

--Radleigh