White gold,Rhodium Tarnish?

[Lana]

Hi,
I was wondering if anyone could assist me with a jewerly problem I am having. I recently purchaed a white gold rodium plated diamond bezel set necklace on the internet that came with an appraisal to verify it.My question is this:around the diamond bezels there seems to be tarnishing that is almost a black or brownish color.It is particularly concentated around the areas where the diamonds meet the bezel and where the bezels meets the chain.Is it possible for rodium plated white gold to tarnish.What can I do to fix it.Should I have it rodium plated again? If anyone can answer this I would really appreciate it.

 

[pyramid]

I am a consumer but was wondering if maybe these were areas where the solder was when the item was assembled e.g. joining links or where the bezels are assembled for the stones.

 

[Griffin]

Rhodium solution is amazingly easy to contaminate, and can lead to a tarnished or almost "burned" look. Not putting down an intermediary plate over silver or non-precious metals can do the same thing, so can not cleaning the piece well, so can the wrong voltage, etc.
Many people don't use the right wires to wrap the piece, and use of standard brass wire will contaminate a solution almost instantly.

Replating over a failed plate won't help, but if you electro-strip the piece or simply polish off the old Rhodium, a replate should take just fine. Just make sure it is well cleaned and degreased, which is my guess as to what went wrong the first time.