[size=small]Gold jewelry: gold jewelry pieces of every size and shape fall somewhere in that huge range between FOIL and SCREW CAPS. TID will help jewelry hunters avoid shallow coins but junk has to be dug.
It's been said elsewhere that 90% of jewelry lost is lost in the water or witin 10 feet of it. That leaves 10% on land. Food for thought.
I have turned up jewelry at every conceivable point on the scale, though, from foil right on up into coin range. But the majority falls smack in the middle of nickle - pulltab territory. So, I set up for foil and tend to look at DISC as 'iron blanking' more than anything else.
I know one fellow who notches out ALL coins and doesn't bother digging them. He'll go out searching and come home with nothing but trash, day after day. He only reacts to midrange targets. This particular "knucklehead" has very few coins, a mountain of trash - - and a heap of rings and other jewelry to show for his efforts.
I have never been able to pass over money, so this sort of set-up doesn't work for me. But if you have that sort of discipline, it can pay off.
Many times I don't dig if I think it's a penny, dug one that turned out to be a heavy 20" .925 silver chain.
Last year I was searching a park infested with screwcaps. It was formerly the druggie and wino hangout and I was tiring of finding the things, to be honest. When I twiddled the DISC knob on my Vaquero/5.75 to read yet another screwcap, I ho-hummed and dug what I thought would indeed BE a twist off - like I said, that's what I thought.
Instead, what I found was someones gold teeth, and I mean GOLD teeth. The whole front of their mouth was missing, it seemed! The entire upper bridge lay in my hand and it was the old kind, not that modern, fleamarket "grillework." Good, solid dental gold - and plenty of it. My point? Same as the above note - things masquerade as something else.[/size]