To clean or not to clean a kilo bar?

[Clawhammer]

.... I'm not quite sure how you go about "Un-Cleaning" one

That's easy, just put it in a sealed container with some burning sulphur (i.e. throw in some lit matches) and it'll turn as black as the ace of spades.

 

[Lunarowl]

.... I'm not quite sure how you go about "Un-Cleaning" one

That's easy, just put it in a sealed container with some burning sulphur (i.e. throw in some lit matches) and it'll turn as black as the ace of spades.

taking notes.. ok.. now how do you do the yellow, blue, purplish toning?

 

[FraterArgentum]

.... I'm not quite sure how you go about "Un-Cleaning" one

That's easy, just put it in a sealed container with some burning sulphur (i.e. throw in some lit matches) and it'll turn as black as the ace of spades.

.


Ahhhhh of course: 'Tarnish' = Silver Sulfate
It's basic chemistry 101.....but yeah: What about 'Rainbow Toning'?

 

[Clawhammer]

Artificial rainbow toning is achieved by electrolysis in a sulphate bath. Different voltages produce different thicknesses of 'tarnish'. It's light being refracted as its reflected through sulphide layer. Different thicknesses of tarnish produce different colours.

 

[SilverMike]

.... I'm not quite sure how you go about "Un-Cleaning" one

That's easy, just put it in a sealed container with some burning sulphur (i.e. throw in some lit matches) and it'll turn as black as the ace of spades.

taking notes.. ok.. now how do you do the yellow, blue, purplish toning?

Pet it often and wait a few years.