How to remove colloidal silver stains?

​Does anyone know of a method for removing colloidal silver stains from porcelain? I'm afraid I may have ruined my sink!

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Try swabbing with ferric chloride or ferric nitrate solutions to etch the silver.

Chikpeas Brother (author)  steveastrouk3 years ago

Will doing so damage the porcelain?

"damage" more than being bluey-green ?

Hence "try", generally, no, in my experience porcelain isn't affected.

You could also try a metal polish.

Chikpeas Brother (author)  steveastrouk3 years ago

Thank you for your help!

Let me know how it works.