375 gold sample - application in jewelry

Gold is an amazing metal having a deep yellow color, without any unnecessary additives. The glare of the metal is further strengthened after polishing. It is extracted from natural deposits. In some cases, this process is carried out in conjunction with the extraction of other metals. In the latter method, gold is often pure enough in its original form and contains various impurities, such as silver or copper. For this reason, gold mining companies subjected to gold extraction, t. E. Special treatment.

Gold as metal

Gold pure form is produced in the form of foils, bars, wires and tapes, their purity is 99 to 99%. Such a metal has a high plasticity and softness. For example, one gram allows you to make the wire about four kilometers long.

Jewelry

For the manufacture of gold jewelry in its pure form does not apply because such ornaments have had excessive fragility and could not endure even the slightest physical impact. Master alloys are used which contain a different percentage of the pure metal. And, depending on the amount of pure gold, the product is assigned to a particular sample. Thus, for example, 375 gold sample contains less than all of the metal in pure form. It contains only 37, 5% gold, and the rest - the additive in the form of silver and copper. It is believed that this low gold samples. Russian standards

Russian standards in the industry distinguish 5 categories of jewelry alloys with 375 sample. The scope of use of such products is not too extensive, as they quickly lose their luster in the interaction with the environment. 375 gold sample may have different color from rich yellow to bright red. High strength and hardness have pink metal alloys, they are also well suited for soldering.

The use of

Despite the low estimate of 375 fineness of gold is widespread in jewelery. It is often used for the production of wedding rings. In Russia, 375 gold sample is considered to be the lowest sample.

European gold

In Europe, the manufactured 333 samples of gold, which has in its structure an even smaller percentage of pure metal. Nevertheless, it is also used in jewelry. Masters of jewelry art in Russia and in Europe for the manufacture of its products using gold alloys of different composition, since the addition of other metals as a ligature allows you to receive a variety of shades and colors. In recent years, the popularity of take on metal with shades of pink, green, blue and chocolate. Gold 375 samples

Alloy 375 samples ductile and malleable by the presence therein of silver. Copper is able to increase the hardness of the composition, but as it gives ligatures saturated red color, thus degrading the corrosion resistance of the product. For 375 samples do not use the following metals: platinum, palladium, cadmium, zinc. The main components of this alloy - gold, silver and copper.