It is known that silver jewelry in the course of their carrying on a human body quite often becomes dark, bringing a certain discomfort to the owners. And the statements of some "experts" that the darkened jewelry of silver tells them to owners about diseases of internals or about damage imposing, only add fuel to the fire.
Why actually darkens silver? Time to reject all conjectures and to understand this question from only right scientific point of view came. Silver, being precious metal, actively and freely reacts with the sulfur which is contained in stalemate allocations of the person therefore chemical compounds, certain sulfides which are a raid on metal are formed. The composition of jewelry silver from which rings, earrings and chains are made includes also copper which, in turn, easily interacts with sulfur. As a result of such contact it is oxidized and also causes darkening of silver jewelry. There is a certain dependence of appearance of jewelry of silver on their test. The it is higher on products, the less contains in them copper, so, they are less subject to oxidation. An indicator of the highest purity of this precious metal – test 999. However it is necessary to remember also that sulfur is capable to cause darkening even of the purest silver. Though such metal which contains in alloy of high test is much less subject to change and is oxidized in the last turn. In order that silver jewelry did not darken and looked elegantly, it is necessary to follow the simple rules. It is necessary to remove them during considerable physical activities and sports activities, during acceptance of a shower and bathing in the sea. Various cosmetics negatively affect jewelry of silver. You should not worry if your silver product darkened, – there is a set of ways to return it former gloss, but it is already a subject of a separate conversation. It is impossible to forget that jewelry has to give to people positive emotions, but not cause concern and nervousness. Let them please you and surrounding many years!