Key Takeaway
Silver turning black is sulfide corrosion — a very thin surface film that takes a trace of metal with it, but not structural dama...
Key Takeaway
Sterling silver is 92.5% pure silver and 7.5% copper. That copper content controls hardness, tarnish behavior, skin reactions, an...
Key Takeaway
Sterling silver is at least 92.5% silver, with the balance usually copper — a standard England has held to since a statute of 130...
Key Takeaway
Does sterling silver tarnish? Yes: sulfur gases in the air react with the surface and build a dark film. It doesn't mean the jewelry ...