Another popular superstition indicates the presence of dark marks on the skin in people consuming large quantities of meat.
Causes marks on skin from gold
In fact, often a reaction on the skin is if the person uses a cream or other cosmetic products containing mercury. It can be blush, powder. In this case, upon accession to the chemical reaction of the composition with the gold traces are formed on the skin.
There are several causes of black on the skin in contact with gold jewelry. And one of them – amino acids contained in the human body. And someone body might react to a precious metal, but some people have such a reaction is not observed.
There is a perception that the skin blackens on contact with the gold in people who have diseases of the endocrine system and liver.
Often black marks from gold rings, chains and bracelets are the allergies. Today it is impossible to meet in the sale of jewelry made of pure gold, so the alloy can enter the provoking an allergic reaction components. For example, an alloy of Nickel. Or copper, which can stain the skin a greenish color.
Stripes on the skin of the face or hands can be formed and the poor the removal of polishing pastes made of precious metal. It is used for machining and cleaning of jewelry items. To get rid of paste, good enough to wash the ring or chain.
The quality of gold and dark marks on the skin
To the question, why when wearing gold jewelry on the skin are dark lines will help to answer the analysis of the quality of the jewelry. If the product does not meet specified in the certificate on production data, rings and earrings with a high content of natural alloys will leave lines on the body. A widespread judgment that the Nickel or copper in contact with the decoration of the sweat also cause a corresponding reaction and darkening of the skin.