Can lower quality glass degrade over time even if not used?

Home Frequently Asked Questions (FAQ) All Products Glass Can lower quality glass degrade over time even if not used?

The short answer to this is no.  Glass is glass and takes over a few million years to degrade.  If glass is cracked or something seems it is degrading, this is probably from 1 of 2 causes.

First, it may not have been annealed properly.

Second, it could be that the colors were not compatible and over time it cracked.

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