This is a beautiful  glass stopper for a perfume bottle.   It is  frosted and polished crystal that measures 5" in length and is 2" wide.   The art deco design is that of a lady sitting in front of a vanity mirror fixing her hair.  Her elegant gown, hairdo and features are carved out in design and highlighted by glass frosting.  You can see her face in the mirrors reflection.  The dress is flowing and has puffy sleeves and a bow in the back.     

The stopper part measures approx.  11 mm down to 8mm and is 7/8" long.

I have posted a lot of photos, as it is difficult to photograph all of the details in glass.    One of the photos is a sketch, so don't think that is how the stopper really looks.  I was trying to point out the details, which are many.  I am assuming this dates backs to the 1930's and it most probably is European in origin.