I make a necklace out of argentium wire with turquoise stones
woven in the metal. I heated it in the oven at 365 for 2 hrs, and
now the silver is discolored. Other posts say to pickle the metal
to remove discoloration, but I'm afraid this will harm the
I think pickle will harm the turquoise. Also, heating the turquoise
any amount is risky because it may harm a waxed or stabilized stone,
or may crack the stone.
Argentium sterling is harder than regular sterling if you have
worked it at all, so additional heating really is not necessary. At
this point, you might try to remove the discoloration with radial
bristle discs or with pumice mixed with water. Either way, it will
take some effort to remove the stain without abrading the turquoise.
It might be less difficult to start over. Gulp! Good luck.