I am glad you like the floating glass desk. Thanks for your question. The glass is attached at each end using metal channel. The glass was attached to the wall structure prior to installing the wall finish.

How thick is the glass on this top?

Thanks for your question. My best recall is that it is 1/2 inch thick.

That is encouraging! I am looking to do something similar with 1/2 inch but was concerned it would look to flimsy. however, the quotes I have gotten for 5/8" and 3/4" are very expensive. I hope your recall is accurate because in the picture it really looks great.