King & Queen of Rings

Sterling Silver Blue

Nitric acid test in a subject that I thought might be silver, the color was black, the metal can be?.

Did not show no acid nickel silver blue red indicating blood (Sterling), not only cream no green Black. Thank you for any help ...

It appears that you do silver nitrate. From Wikipedia: crystals of silver nitrate can be produced by dissolving silver in nitric acid and evaporation solution. The particular compound stains skin a gray or black that becomes visible after sun exposure. When he has his black skin exposure to sunlight, have the money. Beware, however ... AgNO3 is toxic.

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