I seem to be having a problem with my liver of sulfer patina on
copper. i have a neckalce that is a pendant with double chain – all
copper. i dipped it twice in liver of sulfer, brushing in between
dips with a brass brush to end up with that gorgeous purpley/gun
metal color patina.
i wore one necklace at a show and noticed some grey coloring on my
skin – i live in the tropics and it was a hot day, so i thought
perhaps it was the patina in contact with anti-bug spray oils,
sunscreen and sweat. i did not wax or otherwise coat the necklace, as
i wasn’t sure what the best prodecure was.
i took the necklace of and put it in a plastic bag for about 2
weeks. it now has a lot of green scale on it. i used a brass brush to
see if i could brush it off and very easily and quickly all the
patina (including the green) came off.
so my questions are multiple:
did i perhaps use too strong a concentration of liver of sulfer? if
so, how do i remove the old patina and start over? or, do i just need
to protect the patina? if so, how should i coat the necklaces to
protec the patina? – wax seems to bulky and hard to get all over and
around all the links . . .
thank you so much for any advice!