583 gold trial

Breakdown refers to the amount of gold content in the alloy from which the jewelry is made. In its purest form, this precious metal is too soft and therefore unsuitable for making jewelry of frequent everyday use. To give it the necessary strength, alloys are made with other metals, among which copper and silver are most often used. Quite often, other metals are added to gold to create different shades (eg white or red) and the properties of the alloys. The amount of gold that is contained in such alloys is a breakdown. During the USSR, 583 samples of gold were most common .

And even earlier, the content of gold in precious jewelry was determined in carats, while it was assumed that 100% gold corresponded to 24 carats, and the presence of any impurities already reduced the number of carats, depending on the amount of added impurities. This system exists until now in the United Kingdom, the United States and some other countries. In the Russian Empire, and then until 1927 in the Soviet Union, samples of precious metals were determined with the help of a slide system, the alloy of which was conventionally divided into 96 parts, and not 24.

Then in the USSR and in many countries began to use a more accurate metric system. It indicated the content of the number of parts of pure precious metal in 1000 parts of the alloy. It is by the number of such parts that a gold mark is determined, which is put on the jewelry. According to such a system, it turns out that gold in 14 carats corresponds to 583 gold samples, 18 carats to 750 samples and so on. This explains the origin of the already familiar "non-round" values of metric samples. When these two systems are compared, the definition of absolutely pure gold is ambiguous. Formally, the 1000th sample should correspond to gold in 24 carats, but in practice it is impossible to obtain such gold and therefore more often called "pure" gold of 999 (three nines), and sometimes even pure gold of 24 carats is called the corresponding 990 sample.

All the gold alloys used in the production of jewelry are appropriately appropriated. Earlier in the USSR there were 958, 750, 585, 583 and 375 tests. At the same time, 583 samples of gold were most widely distributed. Alloys of this sample can have a different color depending on the amount of non-ferrous metals contained in them. For example, if the alloy contains 58.3 parts of gold, 5.7 parts of copper and 36 parts of silver, it has a green tint, it has a pink tinge with a content of 23.4 parts of copper and 18.3 parts of silver, and with a content of 33 , 4 parts of copper and 8.3 parts of silver are already reddish.

To obtain white gold, which is widely used in the case of making jewelry with diamonds, 583 gold samples were also used. It consisted of copper 16 parts, silver 23.7-28.7 parts, zinc 8.7 parts, as well as 13-18 parts of nickel or palladium. In the future, in all countries of the former Soviet Union, 583 samples of gold were replaced by 585 samples, and gold gained popularity with 750 samples. It should be noted that the color of gold is not always associated with its breakdown. With the same sample, it can have both red and yellow, white, green and even brown or black.

An earlier traditional opinion about the dependence of the color of gold on its sample developed during the USSR, when the jewelry industry produced gold with the same color for each sample: the 750th in yellow, the 583 in red and 375 in pink. But now for the production of jewelry used a variety of ligatures, and therefore the color of gold products can be completely independent of the amount of noble metal contained in them, and the same sample have both white and black.