Does nickel silver turn your neck green?

Nickel silver, an alloy of nickel, copper, and zinc, typically does not contain any actual silver, and it can sometimes cause skin reactions in sensitive individuals. The green staining often associated with jewelry is usually due to copper oxidation or reactions with sweat and skin oils. If you have sensitive skin or are prone to reactions, it's advisable to test the material or opt for hypoallergenic alternatives.