I don't get it then. You said you wanted a platform. Is that not a platform?

How about this...

Take a natural "log" (a fairly thick one so it's stable) and cut right angles in it so that the cut corner fits in the corner of the glass and attach another "natural" looking piece of wood at the top for your platform. Just make sure it's stable enough that it won't topple. You could do that in both corners and run a platform all the way across.