So I went back to Lowes where I'm pretty sure the renovator bought most of the tile, and found out they wet cut the tile for you, which is awesome.
Lowes guy cutting tile
I had made a cardboard cut out and the light didn't seem to be an issues, so that's why I chose to stick with the tile idea and not glass. The guy did a great job cutting it to exact proportions, and I only had to sand off a little to make it fit snugly.The tiles on the decorative part jut out a little, so they provided a base to sit on, and I just added some supports to the back, which the Lowes guy cut as well. It looks and works great! It's level except it is slightly tilted towards the short so water can run off.
shelf in place