What is a 750 gold test and how is it different from 585?

The positions of gold as capital savings over the past decades have been shaken - now it is customary to invest in real estate, business, stocks. But to say that no one purchases ingots or makes an additional bet on the “eternal” metal, of course, is impossible. If it’s not about capital investments, but you just want to learn more about gold, its samples and quality, this information will be useful and detailed.

The most common philistine question - what is the difference between a 750 sample and 585? And he requires a detailed answer.

There is more than one standard in the world for determining gold samples. The most famous existing samples are metric, carat, spool. In Russia, the metric system is used, and the digits in it indicate the percentage of pure gold in the alloy. In the post-Soviet space two most popular samples - 750 and 585. And each has its own characteristics.

If you buy, for example, a gold ring of 750 tests, it will cost more than the analogue of 585 tests, and more expensive by at least 30%, or even by 50%. This is a prestigious and expensive gold, which on the part of wealthy buyers is almost doomed to demand.

But not only the percentage of gold in the product and the value of the matter. The metal of this sample is ideal for machining, as it is ductile. Jewelers manage to make amazing, elegant, elegant jewelry out of 750 gold samples. Finally, the Aurum 750 sample is able to change color under the influence of special additives. So, gold can be bright yellow or dark red (pure). Shades of white are also very in demand, especially in the western market.

So, 750 metal is prestigious, expensive and most in demand as an investment. The geographical popularity of this gold is great, but in the former Soviet Union this type of gold is inferior to 585, as the latter is more accessible to the mass buyer. The situation still looks like this, because many people wear earrings and rings of mothers and grandmothers, and sometimes they simply melt them into new jewelry forms. But the test remains the same.

Gold 750 - a precious metal, the alloy of which contains 75.5% of pure gold. The remaining percentages are impurities or ligatures (and there may be platinum, and palladium, and silver, and nickel, and copper). The final color of gold will depend on the added metals.

If you use other measurement systems, then sample gold equal to 18 carats (carat system). Easy to process and polish gold loved by jewelers and buyers around the world. This is the most popular sample of this metal.

But she also has small flaws:

• increased softness of the alloy (because the products of this sample require careful handling);
• not the highest mechanical stability (for example, the gold ring of this sample is not so difficult to scratch).

However, jewelers know how Strengthen the properties of Aurum 750, they add nickel or palladium to the alloy - and indicators of strength and hardness of the metal go up. True, such a strengthening affects the final price of the product: palladium is very expensive, because not everyone can afford to buy such a highly reliable alloy.

But for the processing, casting and soldering of links, this test is more than good. It successfully combines with colored glass enamel.

High-grade gold (and 750 is just that) has properties that are as close as possible to pure metal. Nickel and palladium, as already noted, increase the density of the metal. This sample is not susceptible to oxidation, it is resistant to chemical acids (with the exception of aqua regia). Even if you repeatedly affect the alloy thermally, it will not crack.

The question of what is better and what is worse is not entirely correct, because the objectives of the acquisition may be different. Yes, and the buyer evaluates the product according to its capabilities, and going beyond the budget is not the best solution.

Today in the country there are officially several samples of gold, and the difference depends on its content in the alloy.

• 375 sample. Pure gold in such an alloy is 37.5%, all the rest falls on silver and copper - more than 62%. The price of products of this test is predictably lower. Such decorations darken in the air, and rings sometimes leave a coloring mark on the fingers.
• 500 sample. Half of this alloy is gold, the rest is impurities. The quality is appropriate.
• 583 and 585 samples. The first option on the market is still found, although infrequently. But the 585 test corresponds to European standards, but there are still differences from the test with a higher rank. And they are hidden in the percentage of gold. Nevertheless, 750 is considered the most popular.
• 750 test. In this alloy, not only more gold, but the ligature is precious here. Impurities help the precious metal to give the desired color, and platinum in the alloy increases both the price of the product and its quality.
• 999 sample. It is the most expensive, but in relation to the manufacture of jewelry is actually not in demand. It is usually sold in bank bullion.

Breakout 750 products have a rich color palette. And you can get the right color by adding metals.

There can be several variations of shades.

• Yellow. In this alloy, 750 units of aurum, 170 - argentum (silver), 80 - cuprum (copper).
• Pink. 750 - aurum, 40 - argentum, 125 - cuprum.
• Red. 750 - aurum, 40 - argentum, 210 - cuprum.
• Green. 750 - aurum, 250 - argentum.
• White. 750 - aurum, 50 - argentum, 200 - palladium.

The most desirable acquisition, according to numerous surveys and sales results, is today precisely white gold.. It looks the most noble. But they don’t argue about tastes, because other variations find their customers.

Under high-temperature exposure, gold 750 of sample is amenable to processing. From this alloy you can make embossed, cast and link decorations. Jewelry is the main application of gold. But do not discount the active use of the precious metal in industry, in optics and many other fields. For example, a wire or thin plates of gold 750 samples can be seen in electronic and measuring instruments.

The alloy can be considered very flexible, because the ability to get special, filigree patterns from this gold is more than high. Yellow gold is the most recognizable in the post-Soviet open spaces.

Of course, products with a sample of 750 can be considered luxury, because they deserve quality care. The tint of the decoration can change under the influence of carbon dioxide, oxygen.

To keep a gold product attractive for longer, you need to follow simple rules.

1. Do not let the jewelry interact with household chemicals and even cosmetics. Any chemical reagents adversely affect the composition of the alloy, although externally this may not be immediately apparent.
2. It is better not to wear gold jewelry for training in the gym and sports.
3. To restore the former shine to the decoration, you need to regularly polish it with a felt rag or just a piece of cloth made of natural wool.
4. Regular onion juice works great on gold. They need to grate the decoration well and not wash off the onion layer for two hours. And only then the product is washed and wiped with a soft cloth.
5. If the gold is old, or for some other reason darkening and spots have already formed on it, the soapy solution with ammonia will return its former appearance to the decoration. But it’s not worth keeping gold in it for more than 15 minutes.
6. To remove unnecessary risks, you need to store gold in boxes with soft upholstery. Good caskets are just that. It is not necessary to allow products to touch each other, therefore it is better to store gold jewelry in different compartments.
7. Accepting water treatments in gold jewelry is also not worth it. We can say that for them it is unnecessary stress.
8. For an aurum, iodine will be an aggressive medium; it will form spots on the surface of a precious product, which will be very difficult to remove. Because gold should be kept away from iodine.
9. To clean jewelry, you can also use GOI paste.

Gold is getting dark - it's a fact. And even high-grade metal is characteristic. You can relate such a negative moment with the oxidation of the ligature. Both copper and silver interact with moisture, carbon dioxide, and oxygen. Therefore, silver turns black, and copper turns green (or also turns black). But the aurum 750 of the test will not darken as quickly as, for example, gold 585, because there are less ligatures in it. And this also affects the price of the alloy and its relevance.

well and if your fingers turn black after wearing the gold ring, you should contact specialist jewelers. Most likely, this is due to the poor quality of the alloy. True, an allergic reaction is not excluded (and it also happens on precious metals).

Guessing the stripes and spots, as was customary before, is not worth it. They appear on jewelry not because of the evil eye, but as a result of banal chemical reactions.And it happens even with high-grade, expensive gold.

In the video below, gold jewelry of 750 samples is demonstrated.