My Test amps have crystalized.

I have some underground sustanon glass amps and they have been laying around for a while now and I just got them out and realized that there is crystals (looks like little white specs) stuck on the sides of the glass amps. I read on elite fitness that some amps if left on their side this will hapen to (never had a problem with my human grade gear).
ANyways they said you could heat the glass amp with a lighter and shake it and it will disolves the crystals again. My question is I have enough of these amps for a cycle and I dont feel like heating each one up. Can I throw them in the microwave or stove.
Thanks for the help

heat up some water, not too hot....and drop them in let'em sit in there that should help put it back in solution. I wouldn't cook them or wave them cuz it's too hard to control the temp.

thanks,
they are good to go now