Smelting would be my second choice. Acess to a ceramic kiln and buying a good crucible is all you really need there and some very simple chemicals like washing soda, borax, stuff like that. With the right flux you end up with 99.9% of all your gold recovered (guessed on the % actually). I have not yet smelted any gold yet, but I intend to. Have the chemicals, just have to buy a kiln. If you use the aqua regia process you end up with a red powder that needs to be melted down to make it look gold again. I use an oxy-acetylene torch. Kiln would work too. So if you have access to a kiln, perhaps your best choice might be to smelt it. There are plenty of how-to's on the internet on smelting, and compared to acid, a lot less dangerous. So you may want to consider this option. - Once you have it crushed to powder of course ...