I love colloidal gold. I have seen many reports and spoken with a number of people who attest to improved mood and mental sharpness from colloidal gold - and I myself am one who will vouch for it's effectiveness from personal experience. I can tell a noticeable difference in mood and concentration when I take colloidal gold, as I do frequently.
Utopia Silver makes colloidal gold by the same process it uses for colloidal silver - which makes it some of the best colloidal gold in the world. The same buy-one get-one free offer for first time buyers applies to gold just as it does to their silver products.