So, exactly what do these pieces look like, when they're hanging on a wall?

Each piece of glass is still in the original wood window frame. There are little wooden feet on each corner, to lift them a few inches off the wall, and a low-watt, low-heat LED bulb (warmer range, 2700k) is tucked in behind.

Each piece adds a unique glow to the room, and as evening sets in, and the light levels drop, they have a stronger and stronger presence. They work well in a smaller space, and command attention on a larger wall.

Here's a video showing you what they look like hanging.

And here's a (VERY low-res) video from a few years ago, from a solo show in Victoria. They are on a dark brick wall, they really pop on a light colored wall, but look great here, too.