I'm a bit concerned now, when you say the insidey bit of the handle is "rough".
This could merely be an indication of poorer quality, or, and I can't tell from the image, a hole has been produced in the body of the piece to create a handle.
Making a hole in the body of an already blown piece is a very difficult and complicated thing to achieve, and will result in a "seam" on the inside of the handle, where the hot glass has been cut and rejoined.
Does the colour of the casing change to a rosy lilac under artificial lighting?