The glass is wedged in and held by silicon bikini straps on each edge. I opted out of using bolts because it would interfere with my wallpaper pattern. (in my design world mind everything floats, but the reality is . . . something's got to secure it from gravity) Had I done it over, I would have had the carpenter construct a channel of sorts at the bottom of the upper cabs to slide the glass into, for that "look ma, no hardwares" effect with just a noodle of silicon where the counter meets the splash and corner verticals.
(The wallpaper is Cole & Sons' Malabar.)