I have a fairly rotten tooth that needs root canal treatment. Can I get a white crown or something else, I reallydo want a gold tooth

You post doesn't really indicate what kind of options you want and there are many. You say gold tooth but not a good choice. It is a soft metal and not known for longevity in the mouth; and too expensive. Although your white crown will incorporate some white gold, but not seen, will that satisfy you?

I can suggest other alternatives but don't know what kind of shape the other teeth are in around the one that is going to be canalled.

Can you afford a gold tooth at $1300 an ounce; not saying there is an ounce of gold in a crown but ask your dentist to advise you.