I would like to have threads focused on specific techniques, and would start with this one. Having seen several youtube videos and because of them obtaining a N52 keychain type magnet, I've just very recently and fairly casually (so far) been playing with and observing the diamagnetic effect.
In using the magnet in "pendulum" mode, but strictly without permanent fixturing, the diamagnetic effect is obvious and intriguing. However, while I had hoped it was strongly unique to silver that may not be the case. While silver is fairly high in value for this property, copper and lead are also diamagnetic, and when I run this test informally (just letting it swing on the end of the short swivel) I see no clearly definable difference between behavior on a .999 silver bar versus behavior with a .999 copper bar.
I will setup a larger true pendulum, with a long arm, and see if this causes the behavior difference between diamagnetic values to become more pronounced, but at this point I have some concerns that this will be the be-all end-all test.
Who else has tried it with copper or lead?