How to identify silver and K gold
There are more and more artificial jewelry on the market, and more and more exquisite. Some can even be fake, and the price is much cheaper than the real product. 18KGP and 23KGP are the signs of alloy simulation jewelry. They are composed of two kinds of logos. 18K or 23K is a logo. K represents the gold content. There are more and more imitation jewelry on the market. Some can even be fake, and the price is much cheaper than the real product. 18kgp and 23kgp are the signs of alloy simulation jewelry. They are composed of two kinds of logos, 18k or 23k is a logo, k represents the gold content, that is, the gold content, the relationship between the number of k and the gold content: au wt% u003d k / 24 × 100%, the national standard gb11887 -89 stipulates that the gold content per kilo is 4.166%, so it can be converted to know: 18k contains 75% gold, and 23k contains about 95% gold. Gp is u200bu200bthe abbreviation of gold plape in English, commonly known as forging gold in business. This kind of logo means that the product is mostly made of phosphor copper as the main material in general metals, forged and pressed at high temperature, and covered with a gold-plated layer. According to the thickness of the gold layer, it is divided into two types: gold-plated and gold-clad. The thickness of the gold-plated gold layer is about 1 mic (mic is the thickness unit of the gold layer specified by the international standard), and the gold-clad is about 3 mics. Simply put, gp is the mark of gold-plated or gold-clad jewelry, the front 18k or 23k Refers to the gold content of the gold-plated layer on the outside. Speaking of this, some people may ask, but the jewelry of 18kgp and 23kgp is mostly white instead of yellow. This is a kind of confusion between pure gold and k gold. One of the characteristics of pure gold is softness, so it is easy to fall off when inlaid with gemstones due to insufficient strength. Therefore, people add silver, copper, zinc and other metals to gold to increase the strength and toughness of gold. The gold ornaments made in this way are also called k gold. Almost all k golds of different k numbers are used to inlay gems in jewelry setting. This not only achieves the nobility of gold, but also makes up for its shortcomings, and can be formulated into various colors according to needs. The internationally popular K gold jewelry has various colors, and the common ones are yellow and white. K gold is divided into color gold alloy and white gold alloy by color. The most commonly used color gold alloys in jewelry are au-ag-cu (-zn) alloys; most white gold alloys are au-ag-ni (cu, zn) and au-ag-pd (-zn, cu) Department of alloys. Gold mixed with 25% palladium, nickel, zinc, etc., will become white, and the main component of it is gold. This is called white k gold, commonly known as k platinum. (Note that platinum and platinum are not the same concept. Many profiteers play word games to deceive consumers. Some take advantage of people’s misunderstandings and falsely claim that platinum is the common name for platinum.) 18kgp specifically means that its plating or coating is 18k gold. Gold-plated or gold-coated jewelry; 23kgp specifically refers to gold-plated or gold-coated jewelry whose gold-plated or gold-coated layer is 23k gold. 925 or silver 925, s925 is the symbol of silver jewelry. Silver is the lowest price among precious metals, a few tenths of gold. In jewelry design, there is almost no need to consider its cost factor, and many avant-garde, exaggerated, luxurious, and thick jewelry can be designed and produced at a lower cost. Therefore, silver jewelry has become another force of the simulation jewelry family. Silver can be divided into two categories: pure silver and pattern silver: pure silver pure silver with a silver content of not less than 990 per thousand is called pure silver. Because it is too soft, it is not easy to cast into the desired jewelry shape, and it is easy to wear and oxidize and turn black. Therefore, it is not suitable for jewelry making. Grain silver said silver with a silver content of not less than 925 per thousand. Also known as '925 silver', the pattern silver is usually made by mixing 92.5% silver and 7.5% copper. Because of the inclusion of copper, the polished luster of its finished products is more dazzling and beautiful than pure silver, so it is often used as a jewelry material and silverware. This is the commonly used raw material for silver jewellery on the market. In order to increase the glossiness of 925 silver jewelry and reduce its oxidation degree, some manufacturers will also plate a layer of platinum on it (note that it is platinum instead of platinum). Such products are commonly known as real gold and silver products in the industry. Previous: How to deal with the blackening of silver jewelry Next: A trip to the silver collection market
