If this is what you are asking...
I pounded down a ring and a few other pieces of gold, flat, from the wifes first husband. (she enjoyed it too)
Mixed up (outside) some Aqua Regia, boiled it, dropped in the gold. Let it go for a couple of days. Added a bit of acid when needed.
Let it sit for a week to dry, then weighed the result and mixed with distilled water.
Once in solution, I make a 1% working solution. 20cc's of gold and 200 grams of ammonium thiocyanate add to 2 liters of distilled water. heat to 80f and use until I get tired of waiting for it to tone something.