Dave, I have put most inorganic gem materials, except for some things
like lapis, turquoise, azurmal in pickle without any reaction at all.
I have put emeralds in, too, although I won’t do that anymore on
account of the fillers being used today. Tourmaline should certainly
be ok, aqua, beryl, citrine, amethyst, as well. Opals I try not to
put in as well. Common sense should apply as always.
Daniel R. Spirer, G.G.
Spirer Somes Jewelers
@spirersomes
www.spirersomes.com