All About 925 Sample

Jewelry has not lost its relevance for centuries. These days, these are not just spectacular and stylish accessories, but also pretty good objects for investing money - gold, as well as platinum and silver over time only increase in value.

In stores, you can often see cutlery and jewelry 925, some believe that it is nothing but white gold. We find out if this is so.

In accordance with the approved state standards 925, the sample refers exclusively to products from argentum, including gold-plated. There is no gold with a similar stigma in nature.

375, 500, 585, 750, as well as 95 and 999 are accepted as officially recognized samples for the yellow precious metal. Such stigma may be indicated on silver items - 800, 830, 875, 960, 999. Despite this, in jewelry boutiques you can often find samples with numbers 926, 923, 929, as well as 952 - not one of them is official.

Some people think that white gold is hidden under the numbers s928. In practice, this is not at all the case - such jewelry is made of silver coated with a layer of rhodium. Such a combination gives the jewelry a specific flicker and prevents their oxidation. Even a very experienced jeweler can sometimes find it difficult to immediately determine which alloy is in front of him.

The marking 925 means that the product is 92.5% precious metal and 7.5% are impurities. Finished jewelry is characterized by exceptional elegance and beauty, and in addition, high quality.

At the very beginning of the last century, when developing an alloy of Argentum 925, impurities of nickel or manganese were added. But numerous studies conducted later showed that the addition of nickel is dangerous for people, and manganese does not give the desired decorative effect. After that, new experiments were conducted with a variety of varieties of ligatures. So, such common metals as zinc, platinum, and also germanium were used as additional components. The composition of argentum 925 with copper was recognized as classic. The fact is that various additives have a significant effect on the color of argentum and its operational parameters. So, the alloy with copper and cadmium is not coated with black coating, while the introduction of any other metals inevitably causes problems with the darkening of the silver surface. Over time, copper became the main component for the preparation of s925 alloy. - This metal not only successfully solves problems with the color of products, but also represents a very economical additive. Moreover, with the addition of copper, the metal becomes strong, dense and reliably protected from any chips, scratches and other types of mechanical damage - this is especially true in the manufacture of jewelry, coins and cutlery made of alloy.

Argentum 925 sample has undoubted advantages that distinguish it from other alloys:

• ease of processing;
• high ductility, due to which it is possible to produce the most complex elements;
• the ability to cover finished products with gold.

The main technical and operational characteristics are directly determined by the properties of silver itself. The density of this metal is 10.5 g / m3 - it is almost 2 times lower than the density of gold, several units lower than the density of lead, but it is heavier than iron.

Argentum is characterized by the highest thermal conductivity in comparison with all other metals, while it has a unique electrical conductivity. TO

The main chemical characteristics include:

• biological and chemical inertness - in its natural form, it does not interact with any other substances;
• among other raw materials, argentum is more prone to reactions with precious metals;
• argentum can be dissolved in nitric acid, heated sulfuric acid, and in addition, in mercury;
• unlike gold and platinum, it cannot be dissolved in “royal vodka”.

The marking of the Argentum s925 certainly includes the definition of “sterling” and the official badge, and the ways of depicting it directly depend on the state of manufacture.

When branding sterling silver, one of the following word forms is used:

• sterling;
• ster;
• sterling silver;
• 925.

The history of the use of silver s925 dates back to the middle of the XII century. Exactly then in the UK, a silver coin called sterling was introduced into the cash flow. For money from such metal it was possible to purchase jewelry, valuable household items and many other attributes of luxury. 240 coins of this metal weighed as much as 1 foot, - if such an amount of metal had less weight, then this gave all reasons to believe that sterling is fake. Times are passing, but today, as before, it is this alloy that is considered one of the best for issuing coins.

However, the scope of its use does not end there. Metal of this quality is widely used to create bracelets and many other jewelry. It makes decor items for the interior, as well as dishes, other cutlery, cufflinks.

Unfortunately, such widespread use of silver has led to the appearance of a large number of fakes. However, to see the hype is quite simple. The very first guideline will be the cost. Noble metal products will not be cheap - the price will be much higher than similar ones made from alloy 585. Therefore, when the seller gives you the goods at a low price, then most likely, before you is an ordinary low-quality product. The final cost of finished jewelry products is based on a large number of factors, in the first place it is the work of the master himself. If the alloy is purchased abroad, then the final price additionally includes import costs, as well as taxes and the necessary profit for the seller. As a result, finished jewelry will cost a lot. And if, moreover, they are issued under a certain well-known brand, this will have an effect on the increase in prices.

For cheap crafts, the following features are characteristic:

• the rapid appearance of black or dark gray plaque;
• tarnish.

Sometimes, noble metals are given out as argentum. Keep in mind: in this case you do not need to rely solely on your external assessment.

If you purchase a product from sterling silver 925 with your hands and cannot turn to the services of professionals, then You can take advantage of several express tests, which you can perform using available means at hand.

• You can distinguish real silver from fake using ordinary sulfuric ointment, which is sold in every pharmacy. The composition is applied to the product with a thin layer and left for a couple of hours. If the jewelry gets a dark color, then with a high degree of probability in front of you is real silver.
• Another effective verification method involves using a magnet. A genuine argentum is never magnetized and, accordingly, is not attracted.

It also happens that the silver alloy s925 is given as white gold. There are also several recommendations for this case.

• As you know, argentum is distinguished by sensitivity to iodine and some other acids, because their use makes it possible to establish the quality of the alloy. To do this, apply a thin strip of iodine to the jewelry you are offering. It cannot be absorbed into gold and cannot damage the appearance of the product, but when it comes in contact with a silver object, a chemical reaction will begin - its surface will turn brown.
• Another experiment involves the use of vinegar. A couple of spoons of the specified composition are dissolved in a cup of ordinary water and jewelry is lowered into this solution. If they are made of real gold, the color does not change, since this noble metal does not react with acids.

The rules for caring for silver products are largely determined by the specifics of those factors that could have a negative effect on this precious metal. So, argentum blackening may be caused by:

• high level of air humidity;
• placing products near preparations containing sulfur;
• when wearing socks - the deterioration of the health of the owner of the product or intense physical exertion;
• frequent contact with perfumes and cosmetics.

Here are the basic rules for caring for silver jewelry.

• To clean jewelry made of this alloy, it is by no means recommended to use abrasive products and hard brushes.
• Regular care of the products involves soaking them in soapy water, rinsing them further, removing excess water and thoroughly polishing them with a suede towel.
• For proper metal care, the best option would be to use specially created preparations for this.

Caring for a silver sample s925 has its own subtleties.

• Firstly, it is desirable to care for such things using a special composition - silbertaushbader. Nowadays, many different alternatives to this tool are on sale, however, it is he who is considered the most effective.
• Secondly, to clean the silver of the sample in question, neither lemon juice nor acid based on it, which are often used to perform metal cleaning of lower samples, is allowed.
• But 925 silver is cleaned with ammonia-based products. To do this, ammonia is added to water at the rate of 1 ml of substance per 10 ml of water, then silver things are loaded into the resulting composition for 30–40 minutes, removed, washed thoroughly under running cool water and wiped dry with a soft cloth.

About what happens 925 test, see in the following video.