Now a question-- would you still avoid all copper-based alloys
if the ring is to be lined with silver or gold?
I had the same question.
The Mokume bands that Joe bought for us this summer were apparently
gold-lined inside before shaping for a 'comfort fit' contour. Part
of the mokume gane was exposed at both inside edges.
The first couple of weeks we wore them, we noticed some green
discoloration on our fingers. Duh! I immediately recognized that
since the shakudo contained copper, it had to be leaching out of the
alloy! I contacted the jewelry store where the rings were purchased
and told the owner what was happening. He said that it shouldn92t be
a problem because the alloys are 18 Kt. gold. I suggested that the
copper in the shakudo was the issue and asked that he check with the
artist about it.
I did not like the look of the bands that had a full sleeve liner
with the gold edge showing on each side of the band but we loved the
rings (a 'lightning bolt' pattern) so I was hoping that the artist
could suggest another fix to correct the problem, perhaps a thick
electroplating on the entire inner surface.
When the jewelry store owner called back about 10 days later, he
said that the artist's studio replied that the discoloration usually
abated after the rings were worn awhile and indeed, by then, it had.
I was still a little skeptical but decided to ride it a couple months
longer before pursuing anything further.
Recently, I noticed that the OUTER surface is showing some etching
as well. I'm certain of this because my band has a diamond mounting
and the etching is not apparent adjacent to the head but only on the
back of the shank where it contacts my palm and fingers.
I wish this very timely and helpful thread had been posted months
ago, but better late than never. At least now I know that the
process will lead to the eventual self-destruction of our lovely
Looks like I will have to become a tactful 'difficult customer'
about it. I'd really appreciate any suggestions on how to handle