Video: ❶ What Is The Fineness Of Gold
2024 Author: Madeline Holiday | [email protected]. Last modified: 2023-12-16 18:57
Precious metals will never go out of style. Once upon a time, not only jewelry was made of gold, but also money, and even mirrors. Today, gold is also used in the space industry and medicine. Few people know what gold fineness means and why it is generally needed. Location: Location: 1
Metric fineness is the percentage of gold and alloys. For example, a fineness of 583 gold means that there is 583 g of precious metal in one kilogram of alloy. If a piece of jewelry weighs 10 g, then gold in it is 5.83 g. It is for the precious metal that money is paid in a pawnshop and an antique shop, not taking into account the weight of the alloy.
It is easy to guess what the fineness of gold 375 (37.5% of the precious metal), 500 (50/50), 750 (75%), etc. means. Gold of the highest 999.9 standard is not used for making jewelry. A similar metal is used in rocketry, in the creation of nuclear reactors and supersonic aircraft. Seams and knots are sealed with gold, which makes them airtight. You can guess that the use of gold is one of the reasons for the high cost of such production.
It is impossible to say unequivocally which sample of gold is the best. The alloy composition depends on the type of work. For example, the 750th fineness is used for finely carved items and settings for fragile precious stones. But the 958th alloy is not in demand at all due to its low strength. Sometimes it is used to melt uniform, smooth products, such as classic wedding rings.
The most popular is the fineness of gold 583. Why is it more convenient to make rings, earrings and chains not of pure metal, but of an alloy? In addition to the fact that it is quite expensive, it is still unprofitable for the reason that gold is too soft a metal and without reinforcement with an alloy will wear out quickly.
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The color of gold is due to the particular metal that is added to the alloy. To obtain pure gold, copper is added to the precious metal. With the help of nickel and palladium, white gold is obtained. And the greenish tint of the metal is due to the presence of silver in the alloy.
In addition to the usual metric test, there are also carat, spool and lot samples. The popular 583rd sample corresponds to the 14th carat and 56th spool. Pure metal (999.9 fineness) is marked with 24 carats, 96 spools and 16 lots. These systems are used in Europe and America.
In the Russian Federation, all jewelry produced legally has a combined or split sample. In the first case, a woman's head in a kokoshnik with a digital sign is placed on the product in one place, to the left of which the initial letter of the territorial state inspectorate is imprinted, where the stamp was put. With the separate method of branding, the image of the woman is in one part of the product, and the sample number is in the other.
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