Agate is agatized if I am correct but what us it from.
Agates form when silica-rich water flows through a rock and deposits tiny, microscopic crystals of quartz. Most banded agates form in igneous rocks where volatile gases left large bubbles in the lava. Over time, agates and geodes form.
Some fossils are agates, and can be called “agatized wood” or “agatized bone.” It forms in a similar way, with silica-rich fluid replacing the original structure.
I’m not sure I answered your question!
Here are a couple IGS articles you could check out:
Agate Gemstone Information
Where can you find agate stones forming?
Introduction to Gemstone Formation