Does anybody know where can I buy 24k edible gold.

I know of two stores in CA you can get it. I think they sell on-line. One is Spun Sugar in Berkeley and the other is Do It With Icing in San Diego.

I bought these on line.. stores do not usually carry them because they are quite expensive... and they have to be the kind that can be used in food.
Look here:

http://www.ediblegold.com/

I use mine very sparingly since they are for very special occassions..