Ant, I could be wrong, but I'm not sure that's what he was referring to. Yep, the GBII will find small gold, no question if there isn't any mineralization to contend with, but it sounds like he's asking about the higher end machines. The short answer is yes, the gold machines will help you. You have to have a machine designed to find gold to have any chance, but the only way to get the most out of any machine is to run it in all metal and dig everything since small gold like that will either blank, disc, or not register at all. By the way, the Diablo is only a gold machine in the jewelry sense, it isn't designed to find gold nuggets. This is where it turns into a personal question, are you willing to dig alot of junk for that small gold at depth, or are you willing to skip most of it to make the most of your time? Unless I knew there was alot of it there, I'd have to pass. Even clad pays better than spending all that time to getting one or two a day. You have to remember, if the gold is that light, there isn't much weight, and even at 18K, that's only 3/4 of spot price, so time vs reward, if that matters to you. If all you want is to find gold, then you need a machine that's designed for it. Yep, the GBII will find gold, even small gold, but not at depth, since it's only 71khz. To get the most, get a Minelab PI machine and biggest mono coil you can swing for the day. I've found #9 shot gold at 4" with a 2100 and a 14" Coiltek mono in heavy mineralization. I've also dug targets at three feet with that coil that sounded about the same. If you want the small stuff, you have to dig everything. It's like Sandman was refering to, yes, you can find more gold if you go that way, but if the pendant or clasp weighs more than the chain, why bother?
Randy