Aluminum and gold share the same conductivity. The type sounds: "clear-ness" "repeatability" "round-ness" are all dependant on the thickness, shape, depth, etc.... No, there is no way to tell the difference between gold and aluminum. The minute you think you have found a certain "sound" that seems different from gold rings to foil, I gaurantee you that I can wad up and shape a foil wad to sound exactly like any gold ring you can show me
You can buck the odds by editing in and out some more commonly recurring types of aluminum, but you will miss gold that fell in that range. Same goes for passing flitty sounds, that aren't locking on, etc.... Those could be gold chains, rings on edge, etc.....
If anyone tells you they can tell the difference between gold and aluminum, based on sounds, take them out to the nearest blighted inner city junky park, and turn them loose. See how long they stick to their claim. I think some people sincerely want to believe this, since the advent of the spectrum graph, 2-axis Explorer graph, etc... And when they finally do dig up something gold, they think "aha, that sounded different than the 50 pieces of trash I just dug and had a different graph plot" etc... But it's all in selective memory: Each time we stoop to dig, we think "this one sounds different", but when it turns out to be junk, we think "yeah, it
did sort of sound junky". But if it turned out to be good, we think "Aha! I
knew it sounded different "
