Regarding neillo: since I don't work with neillo, I will have to look up some things and then post a reply in a day or so.
Regarding granulation: yes, granulation can be done with silver or gold. Granulation is difficult period partly it uses an oven at high temperatures. The problem partly comes in that one must get the metal at just the right temperature so that it will not melt into a pure liquid but just enough to bead by itself. Today, we don't make much use of ovens like they did long ago, especially not here in the West.
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