As most of us who have been detecting for awhile will tell you..... you'll never know for sure unless you dig it. The unfortunate thing about modern trash is that the conductivity is similar to many jewelry type items. Not all, but many. Jewelry items will range all over the discrimination spectrum. From lows near zero to numbers in the upper 30's. Yellow gold a bit higher than white gold or rose gold. And Platinum a bit lower than gold. With that said, most small gold jewelry items will read the same as foil or small pieces of aluminum can slaw. Pulltabs can read the same as some gold rings. And larger gold rings can read the same as some aluminum screw caps. The best advice I can give you is to look for the consistency in your audio, target location and lastly, the TID. If the sound is solid when you sweep it from all directions, dig it up and see what it is. If you find yourself digging all kinds of pulltabs that read 22 (for example), you may want to dig everything except more TID 22. But remember, sure as the world, the first 22 you don't dig will be a gold ring! Murphy's law!!! HH Randy
Oh, and once again.....