Its glass so you will be good to go, its also very small and i dont expect it too break with normal drops.
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The link mark provided says plexiglass, I was under the impression it was glass too. I think cinnamon etc will be an issue in plexiglass. When I get mine I'll be hunting down Pyrex or fused quartz as a replacement, if I have to buy a quantity I'll let you guys know and send it out to anyone interested at my cost. No guarantees though, it might not be an available size.