• RustyEarthfire@lemmy.world
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    23 hours ago

    Well, “vitrified” literally means made glassy, and the process involves melting the silicates in the clay, so there are some similarities.

    • MehBlah@lemmy.world
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      23 hours ago

      Only in process and loosely at that. Vitrified clay or brick if you prefer is much harder than silica glass.