The dear doctor! Such question: why from a gold chain remains zelenova...

[Anna]

The dear doctor! Such question: why from a gold chain there is a greenish trace on a neck? Whether Is it consequence or investigation of any disease or this simply poor-quality gold?

[Solomatov V.G. (the leader konf. artrolog)]

Dear Aina, zelenovato-bluish traces on a skin are left with copper. Gold with a skin does not react in any way. The gold chain contains impurity of copper. By the way there is a set of alloys externally reminding gold, but consisting of copper and tin and t. Item Yours faithfully Solomatov Century