Cleaning discolored and blackened gold

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Does anyone have advice on how to clean blackened and discolored gold / gold alloy on old watches? Is it possible?
Thank you!

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it is easy - take a silver cleaning (polishing) cloth and wipe it gently and carefully
 
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How about i take the watch off your hand and save you the headaches 😗
 
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Patina on gold can be beautiful though. When it’s gone it’s gone.
 
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Patina on gold can be beautiful though. When it’s gone it’s gone.

Thanks - I have 2 or 3 watches with this issue and it does not look good on some of them, I assure you 😀
 
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Patina on gold can be beautiful though. When it’s gone it’s gone.
LIke an annoying friend... it will be back.
 
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Gold is a metal that that wears history. The Japanese writer Tanizaki wrote a great book about that. I would keep it.
 
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Pure gold doesn’t do that. It’s the copper, silver and other metals in the alloy that are forming the patina.
 
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Thanks - I have 2 or 3 watches with this issue and it does not look good on some of them, I assure you 😀
How does one prevent the discolouration from recurring? I seem to find it happening more if I wear them less but I'm not sure if this is true or just coincidence
 
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Pure gold doesn’t do that. It’s the copper, silver and other metals in the alloy that are forming the patina.

Sure! But 24 gold is not common on watches!