Silver becomes black because of hydrogen sulfide (sulfur), a substance that occurs in the air. When silver comes into contact with it, a chemical reaction takes place and a black layer is formed. Silver oxidizes faster in places with a lot of light and high humidity.

How do you clean silver that has turned black?

11 Baking Soda + Water

If you have to deal with stubborn built-up tarnish on your silver jewellery prepare a thick paste from baking soda and lukewarm water. Apply it onto the tarnished spots with a damp cloth. Leave it for 2-3 minutes then gently rub with soft cloth. Don't rub too hard to avoid scratching the surface.

Is it normal for sterling silver to go black?

It is a natural reaction for your jewelry to tarnish over time. The blackened color of this metal indicates, precisely, that our jewelry is made of 925 Sterling Silver. 925 Sterling Silver darkens due to daily use, as well as for other reasons.