THere is Gorilla Glue (haha, yes, you probably could glue your
gorilla with it) and,, Goop,, Epoxy 440. But frankly, I think the two
part epoxy types are very strong and work well in a variety of
situations, I would, however, try to rough up any surface that is
being joined. Glass can be etched a bit, if it will not alter the
appearance of finished product.
Not earth shaking but may be of interest to others on
their projects, I have found that it pays to have many options for
no one product works for all the possible varieties in a workshop.