When buying ** jewelry, we often encounter a variety of different types of gold jewelry materials, such as 3D hard gold, 5D hard gold, pure gold and 18K gold. These names represent different crafts and gold contents, and understanding the difference between them is essential to spend wisely and avoid being misled or deceived in the shopping process.
Pure gold, also known as pure gold or24k gold(In theory), represents the highest standard of purity. In China, according to the national standard GB11887-2012 "Regulations and Nomenclature of Jewelry ** Purity", pure gold usually refers to:The gold content is not less than 99%.The gold content of 999 gold (thousand pure gold) is 999 or above, i.e. no less than 999%。。It is characterized by bright color and soft texture, but due to its low hardness, it is not suitable for making complex and delicate jewelry styles, and it is easy to wear and deform.
3d hard goldIt is a kind of traditional pure gold treated by hollow nano electroforming technology. Through a special process, the hardness of the first grade is greatly increased to several times that of the traditional pure gold, with a high three-dimensional sense and wear resistance, so it can create a more varied and three-dimensional jewelry shape. Although the hardness is enhanced, the interior is usually hollow structure, so it is relatively light in weight and relatively cost-effective. When buying 3D hard gold, be sure to ask the salesman what the gold content is, whether it is 18K gold or 24K gold, because some 3D hard gold jewelry may use K gold technology, such as 18K gold, which has a gold content of 75% (that is, 750 parts per thousand), and the remaining 25% is other metal alloys to enhance hardness, color and durability.
5D hard goldIt is an upgraded version of 3D hard gold technology. It further optimizes the formula of electroforming potion and adopts environmentally friendly cyanide-free technology, which not only improves the hardness of the product, makes it thinner and larger, but also brightens the color, and can use high-precision polishing process to increase the aesthetics of the product. 5D hard gold also maintains the characteristics of light weight, compared with the same volume of traditional pure gold, the weight is reduced by about 70%, and at the same time, it is not easy to deform and damage. Similarly, when buying such products, it is necessary to determine whether it is pure gold or 18k gold.
18k gold, also known as AU750 or G750, refers to a jewelry material that contains 75% alloy with other *** such as platinum, palladium, nickel, silver, etc. Due to the addition of other metallic elements, 18k gold has higher hardness and better toughness, making it more suitable for gem-setting and intricate jewelry designs. However, compared to pure gold, its gold content is lower, and the color can vary depending on the alloy composition added, such as white 18k gold, red 18k gold (rose gold) and yellow 18k gold.
According to national regulations, ** jewelry must be marked according to its own material.
To sum up, when buying ** jewelry, you should choose the right material according to your needs:
If you pursue the highest purity and value retention, you can choose pure gold
If you value the unique shape and durability of your jewelry, accept it at the same timeSlightly lower gold content, 3D hard gold and 5D hard gold are good choices;
If you prefer a wide variety of color combinations and inlay jewelry, 18K gold is popular for its excellent craftsmanship and rich color expression.