Which outcome arises from uncontrolled devitrification during glass production while incorporating ancient Chinese saltpeter-enriched gunpowder remnants?

💡 Explanation

Internal stress fracturing results from uncontrolled devitrification because crystal growth induces volumetric changes, thus creating stress concentrations. Therefore, option C results, rather than shock resistance or refraction changes due to the *crystallization mechanism* overpowering amorphous structure.

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