I never would have guessed.
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It's a shame they don't make actual glasses out of this glass. I'd probably have broken fewer that way.
@lowqualityfacts Silica and silicone are not the same thing.
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That's why getting hit with a rubber band hurts so much. The glass is ripping your skin to shreds.
@lowqualityfacts How can that be when in the Pittsburgh area they’re called gummy bands?
@SteveBologna @lowqualityfacts Well it makes sense because gummy bears are glass too
Stretch Glass information from the Glass Encyclopedia

Stretch Glass: information, pictures and references on Stretch Glass, from the Glass Encyclopedia.