Blackened silver and gold production

In this book, the authors will reveal theoretical mechanism of formation of electrolytic oxygen bubbles during water electrolysis for intensive formation of microdispersed oxygen bubbles on a jewelry silver or gold anode (oxidation), which allowed developing a new electrochemical method of blackening silver or gold. Authors will present the developed on the mechanism basis electrolyzer, which in practice implemented a new electrochemical method of blackening silver or gold. It will be shown that developed electrolyzer made it possible to blacken silver or gold jewelry with a thin, durable and indelible black film, which does not require careful maintenance, like regular silver or gold, retains its magnificent appearance longer and is distinguished by its high strength, bactericidal properties of silver, which help destroy pathogenic bacteria and microbes on the surface of the skin. Black gold jewelry, obtained by the developed method, is uniformly saturated with a thin black film, stylish and wear-resistant and is not expensive. The resulting black gold has a universal fashionable color, combined with white gold in classic jewelry.