My X-Terra 70 is in the mail from my dealer so have not had a chance to play around with it as far as Gold ring readings. I know that Gold rings can pretty much read foil, nickel, tab, pull-tab and perhaps a high coin reading on occasion, my question is has anyone set up a chart showing the digital numbers that they find most of their Gold rings at,,,ie 2,4,6 etc., etc.? Also is a person able to do the coil wiggle over foil to see if it breaks up or stays solid which could be a good indicator of being a Gold item & not foil? I will dig the junk to find the Gold It's just that curious minds need to know