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E-coating protects the surface


#1

Greetings to you all

I’m looking for a material that will help coat the surface of
unpolished yellow gold, to avoid future discoloration and help the
color form becoming yellowier.

I checked Gesswien but not much of luck, I also checked Rio Grande
which I had better luck, They have couple of items that will semi do
the job but it wouldn’t last certain daily activity i.e. swimming or
shower for 15 days while wearing the item (that how Rio Grande’s
customer service put it to me).

Anyway, I know of another process which I believe plating companies
use and I believe it is done using electric current.

Anyone their can shed some light into this inquiry, it will help a
lot.

Thank you all in advance.
Best regards
Dikran Nodznaia


#2

Hello Dikran,

I’m a bit confused at your question…

depending on the karat and colour, gold doesn’t usually tarnish,
however the scope of reactions that are possible with heavily
chlorinated pools and spa/jacuzzi/whirlpools and chemical exposure
are a different matter.

Is it that you are seeking a sealant or a varnish similar to one that
may be used on brass. Marine varnishes work reasonably well,are
waterproof,fairly inexpensive though a pint may be the smallest
available quantity,and last reasonably long in daily wear- however
some customers may be more allergic to the varnish than the alloy if
the piece is fabricated with a low karat gold ( 10kt, or 14kt yellow,
or white golds; alloyed with nickel).

As for plating the piece- I don’t comprehend what it is you are
trying to accomplish with a plating bath, what metal you are
considering using on your anode, or if you are trying to raise a
layer of pure gold on the unpolished contact side of the piece by a
type of electrostripping process. So if you offer a bit more
clarification and describe the unpolished gold you are using, i may
have some idea how best to respond to your inquiry.

R.E.R.


#3
a material that will help coat the surface of unpolished yellow
gold, to avoid future discoloration and help the color form
becoming yellowier. 

hi Dikran, you can plate the gold with a higher carat gold, either
with a unit that you can make -(see archives) - or purchase, or this
process is commercially available; or you can depletion gild a gold
item. This involves heating and pickling a number of times until the
fine gold is raised to the surface.

hope this helps, Christine in Sth Australia