However, to my dismay, I find that over a period of time the chains
Silver tarnishes whether sterling or fine. It’s the silver reacting
with sulphur, not oxygen, which causes the tarnish - silver
I used a Sunshine Cloth to polish them, and the chains left huge
black marks where I drew them through the cloth---really black.
I’m sure any metal would leave black streaks on a polishing cloth,
as it is impregnated with a polishing agent, so actually takes some
metal off onto the cloth. It’s also removing the tarnish, as well as
a thin layer of fine silver.
I tested the fine silver wire by heating it with a torch. It acts
exactly like fine silver. It does not darken in the least from the
Sterling will blacken with such a test, because the copper in the
alloy is reacting with oxygen when heated, but without any copper,
the fine silver will not do so. Such a test is not a test for the
tarnish seen occurring on silver - unless I’ve got the wrong end of
the stick and have misunderstood what you were saying.