I made several bracelets using silver chain, freshwater pearls and
semi precious stones for a customer some months ago which she
returned to me because after a few months they were really badly
tarnished (the clasp, chain and headpins were black!).
I tried to clean them but it was virtually impossible because of the
fineness of the headpins, so in the end i just made new bracelets
and put the silver wire and chain in my scrap pot. They seemed to be
alright again for 3 or so months and then again they went black.
This has never happened to me before and I have tried to work out
what has caused it but I am at a loss.
The chain and headpins for the first bracelets where stored in my
workshop which is only heated for a couple half days a week but they
were wrapped in plastic. The second time I stored all the components
in the house so there was no way they got cold or damp.
There was no heating involved in the process and when I wasnt
working on them they were wrapped so the air wasnt getting to them.
I thought about brass brushing the whole thing and polishing it with
tripoli and rouge but that would be very fidly and I thought it would
risk damaging the pearls and stones
If anyone could help me to understand what is going wrong and also
how could clean the chain/headpins/clasps without taking the whole
thing appart again and without damaging the pearls and stones I would
be so grateful.