First, gold jewelry is easy to participate in counterfeiting, and it is best to choose famous brands when buying, because it is difficult for us to distinguish the purity. Generally speaking, big brands and hypermarkets can meet the requirements.
The probability of fake gold sold by some big brand gold shops is very low. After all, these brands have been established for many years and have branches all over the country. Once there is a problem of counterfeiting, it will be exposed and closed. But not everything is absolute. There was a constant storm in a brand gold shop. At the 3 15 party on 20 13, CCTV officially exposed the fake news of a brand of gold. Because some buyers have the right to test gold, they suddenly want to take it out for testing after buying it back, only to find that the purity of gold bought in brand stores is not 100%, only 997.7%, which was immediately exposed.
Now go to the gold shop to buy gold, all of which are three nines or thousands of gold. It is difficult to reach 100%, especially after iridium doping, the purity of gold will be greatly reduced. Students who have memorized the periodic table of chemical elements must know that iridium is very close to gold, and this element has many characteristics similar to gold, such as strong corrosion resistance, so it is invisible to the naked eye when mixed with gold. Iridium also has many uses in daily life, such as making pen tips. Iridium is certainly not as good as gold in value.
Third, in fact, gold shops can definitely identify gold. If a gold shop is run by an individual, he must have this qualification and the ability to identify the authenticity of gold. Because if the guest can't answer the relevant questions, the guest will doubt the authenticity of the gold jewelry in the gold shop, and the possibility of shopping in the gold shop is very small. Not to mention the gold shop opened by a jewelry company. General jewelry enterprises attach great importance to the staffing of various shops, especially those selling gold jewelry. Salespeople need to be more professional. The manager of this store knows more about gold ornaments, and some gold shops with big brands have higher requirements in this respect. Such brand stores are generally chain stores.
Four, a region may have many chain stores of this brand. In this case, the headquarters will set up a jewelry appraisal agency equipped with professional testing instruments and personnel. Therefore, there is no doubt that gold shops identify gold. After all, let alone opening a gold shop, that is, opening a gold shop in other industries. We all attach great importance to personnel training. Only when service personnel have a certain understanding of their own work and have corresponding skills can they give consumers the best experience and carry out their work better.
You can identify the authenticity of the gold necklace yourself. The identification method is as follows:
I. Inspection and sealing According to national standards, precious metal jewelry should be marked with signs such as origin, manufacturer, material and content, and those without signs are unqualified products. When there is a quality problem, the quality inspection agency can detect and judge according to the logo. Consumers should buy their own brands and gold ornaments with different gold contents according to the imprint.
Second, the sensory test method:
1. color: all gold is dark yellow, k gold is yellow, red and white, and imitation gold products are mostly copper alloys with lighter colors.
2. Weight: The specific gravity of gold is 19.3g/cm3, which is much higher than that of imitation gold products. For example, a complete gold ring weighs about 5 grams, while imitation gold products of the same size usually weigh less than 3 grams.