not for gold!
I bout this a few months ago for my wife to prospect with. It douse great for foil, tin, change and etc. But we took it to Alabama gold camp and only picked up nails, foil, and a stray penny. I put a vile with 2 grams of gold some were pickers under it and it acted like it wasn't there. So for change, rings, and beer cans it's great but for gold I'd stay completely clear and spend a few hundred more.