If we refer to the periodic table of Mendeleev, then gold is a heavy metal of yellow hue with atomic number 79. In Latin it sounds like aurum. Gold 750 - what does it mean? Where is it used and how much does it cost?
Using gold
According to historical information, gold is a pioneer of metals with which humanity has interacted. Acquaintance with him happened 2-3 thousand years ago, as evidenced by the decorations found at the excavations. Also, references to this precious metal are present in the Iliad and the Bible. Alchemists also aroused great curiosity about gold, often looking for ways to turn metals into a precious one, which was credited with great power.
In the modern world, gold has several functions:
- in commodity production, it performs the function of money;
- in art used for jewelry work;
- in medicine is used as a component of some drugs;
- also used in the chemical and electrical industries.
Gold 750 - what does it mean
It is worth noting that pure gold without additives simply does not exist,there is always some percentage of certain impurities. The number of parts of pure metal, which is contained in 1000 parts of the alloy, is called the breakdown. There are 4 sample systems accepted in the world: spool, metric, lot and carat. The most popular are metric and carat.
In our country, the metric system is common, that is, the ratio of the number of grams of gold per kilogram of jewelry alloy. There are tests from 375 to 999. 750 gold is most appreciated by lovers of expensive jewelry.
Carat system is typical for European countries and the USA. The test in carats is the ratio of the number of shares of pure metal from 24 parts of the alloy. This system is designed exclusively for gold alloys.
585 or 750 gold?
Most often when purchasing jewelry, consumers are faced with 585 and 750 samples. Russian lovers of precious metals often give their preference to products with 585 fineness, which can be easily explained by the ratio of price and quality. However, jewelry made from such gold contains more impurities.
Gold itself is a very amorphous metal, and with constant wear, the product could be deformed or scratched. With the addition of silver, palladium or nickel, zinc and copper, a harder alloy of the precious metal is obtained. 750 gold contains 25% of additives such as platinum, silver, palladium, copper and nickel.
Depending on the increase in the proportion of some components, it is possible to obtain an alloy of variousshades: from pale pink to greenish. It can be noted that in Russia the most common reddish shade of gold, and in Europe - yellow. The well-known "pure gold" is made by adding copper to the jewelry alloy. When the ingot is heated, a unique reddish tint is obtained.
750 gold is special in that it is easily polished and processed. The most complex and sophisticated jewelry is obtained from this alloy. In addition, this gold can be used as an excellent base for enamel. Precious items of this kind are now gaining more and more popularity.
But still it is worth noting that 585 gold is more suitable for everyday wearing jewelry, as it is more durable. If we compare how much gold 750 and 585 cost, then a gram of the first alloy is almost 1.5 times more expensive (the price is about 1100 rubles).
Gold quality
Gold has a chemical ability: in its pure form, it does not undergo oxidation and many other chemical influences. But when combined with other metals, these properties become different. It is generally accepted that gold alloys of 750 and higher samples undergo little corrosion. It should be noted that during the production of an alloy, gold can be distributed unevenly, and then the area in which it is small or completely absent can be corroded. Jewelery in this area will be dull.
Italian gold
Many reputable jewelry stores offer products from "Italian gold". The name, as you might guess, comes from the country of manufacture of jewelry. Jewelry of this type have a special type of processing. They are carefully polished, and visually it seems that the products shine. In addition, the jewelry is distinguished by fine workmanship and a variety of ornaments.
When purchasing such a product, you should pay attention that scammers can pass off a product of lower quality as Italian gold 750. Real Italian jewelry must have the appropriate certificate. For the Russian eye, the colors of Italian gold, which can have white and yellow shades, are unfamiliar.
Italy is a unique country. It occupies an honorable third place in the world in the production of jewelry with gold mining of no more than 100 kilograms per year. The rest of the material is purchased in South Africa. Thanks to the unique design, the profit from the sale of jewelry brings considerable income to the Italian treasury. Buyers of Italian jewelry - Switzerland, USA, China, United Arab Emirates and other countries.
White gold
18K white gold is an alloy of gold with nickel or palladium. Sometimes platinum may be present. The white gold alloy itself has a rather dull luster. In order to make it brighter, a thin rhodium plating is used, which, if worn frequently, needs to be renewed quite regularly.
The technique used in making jewelry is granulation. To very thinTiny granules are welded onto a gold plate, and with their help a pattern is created on the product. This type of technique dates back to ancient times, as evidenced by historical and scientific excavations.
At present, many lovers of precious jewelry have heard of such well-known jewelry houses as BULGARI, DIMIANI, which use the granulation technique.
When purchasing gold items, you should pay attention not only to the price, but also to the availability of the necessary certificates and passports. It is worth buying products from trusted and well-known manufacturers in specialized stores.
