Pretty sure I saw someone with a glass one on youtube, but it wasn't as exciting to watch as I'd hoped. I'd still like one though.

Found the video: https://www.youtube.com/watch?v=c7FoqR9oCfI

Seems like there are models with a transparent top (low pressure part), ex: https://www.amazon.com/Premium-Crystal-Glass-Top-Stovetop-Es...

You might want some blast protection if you use a completely transparent one due to the explosion risk and flying glass pieces.

I've seen one that had a glass lid that allowed you to view inside the top.

You knew it was working when the glass fogged up.

Too bad Scotty never time-traveled back to our 1984 with the formula for transparent aluminum.

Not sure of the year, but aluminium oxynitride exists (edit: and more commonly, sapphire).