Types of surface
In jewelry, rhodium coating is prized for a unique optical properties. Rhodium plated silver distinguishes with a darker color and high gloss, which makes it looks much more luxurious, resembling the white gold. Rhodium plating involves covering silver with a very thin layer of rhodium. The thickness of the layer itself is between one, up to several microns. Electrolytic rhodium coating is very durable. A big advantage of rhodium is its resistance to sulfites, which are the cause of blackening of silver. Therefore, if the jewelry is desired to look always like a new, rhodium plated products should be chosen. The jewelry protected in this way, is not only resistant to changes of the color or brightness, but also protected from scratching and damages which are inevitable results of daily use.
Oxidation is the process of plating metals with their oxides, in order to protect them against corrosion. The coating characteristic feature is uneven, thin, black layer, which makes the jewelry more resistant to external factors. Oxidation makes an impression, that jewelry looks like an old one.
In the past 5 years gilding has become very popular in silver jewelry production. Sometimes, at first glance there is no difference between gold and gold plated jewelry, but in this case of gold plated jewelry, the base metal, of which the product is made, is 925. silver. You have to be prepared, that you will spend more money on gold plated silver jewelry, than on silver jewelry without coating, however the price is still much cheaper in contrary to the jewelry made of gold. Although the thickness of the gold coating is about 0.5 to 2.5 microns, you have to be aware that coating is exposed to gradual abrasion, which is a natural process, always occuring on the surface. Undoubtedly, the gold plated jewelry is better solution for those who cannot afford to buy fine jewelry but gold coating has to be renewed from time to time, to preserve the shiny, golden look.