I want to plate very thin gold on ceramic plates. I have a saucer
here from China and a cup from Germany which are completely coated
in gold. It is striking. How is that done?
It’s not done with an electro-plating process. Instead, you paint a
"luster," which is a liquid suspension of gold in an oil base, over
the already-fired glaze. When re-fired to a fairly low ceramic
temperature (cone 018, which translates to about 1323F) the gold
reverts to its metallic state. Of course, this stuff isn’t cheap -
figure on paying about $60 for a little bottle containing a couple of
grams of the liquid luster.