Alright, I got some sleep, here we go.
Plasma is basically super crompressed gasses, which in turn heat up because of all the pressure needed. If a carebon based life form was put in a bunch of plasma that was just the right conditions, it would basically desintegrate the life form, and compress it. This compression and heat would be so great that the carbon would turn into… diamonds. I seriously doubt that a light bulb could get to this level.
I actually got this theory from Doctor Who, but in principle it should work, it’s just a matter of testing it out.