Au750 refers to an alloy containing 75% ouro e 25% Outros metais, commonly known as 18K gold. Usually used to make jewelry, the mark is G18K, G750 or Au750 “where G is the meaning of gold content”.
24k gold is often considered pure gold, but the actual gold content is 99.98%. The purity of gold and its products is called “cor”. There are two types of color markings on the market for gold products: one is percentage, such as G999, and the other is K gold, such as G24K, G22K, and G18K. meu país tem regulamentos sobre a marcação e identificação de produtos de ouro, e geralmente exige o código da empresa produtora, nome do material, impressão de conteúdo, etc., e nenhuma impressão é um produto não qualificado. O mesmo é verdade internacionalmente. Mas para alguns produtos muito finos, é permitido não marcar. O padrão nacional GB11887-89 estipula que o teor de ouro por abertura (abreviatura de quilate em inglês e quilate em alemão, escrevendo K) é 4.166%.
Au750 not only has the precious value of gold, mas também tem as vantagens de forte ductilidade, alta dureza, and variable colors. It is very popular. Because the price of gold fluctuates daily, the price of au750 also fluctuates. The current price of gold is 346 yuan a Gram, au750 price is about 75% of the price of pure gold. The price of gold varies from day to day. Depending on the process and the other 25% gold-containing species, the price of diamonds is also different, and the price of Au750 fluctuates accordingly.
24k gold means 99.99% ouro puro,
Observação: 1. K: refers to the purity of gold.
Pureza: refers to the vividness of colors. From a scientific point of view, the vividness of a color depends on the single degree of light emitted by this hue. The colors that can be distinguished by the human eye with the characteristics of monochromatic light have a certain degree of vividness. Different hues not only have different brightness, but also different purity. Por exemplo, red in the pigment is the hue with the highest purity, colors such as orange, amarelo, and purple are also higher in the pigment, and blue-green is the hue with the lowest purity in the pigment. In the daily visual range, most of the colors seen by the eyes are gray colors, aquilo é, unsaturated colors. With the change in purity, it is so rich in the world. Even if the purity of the same hue changes slightly, it will also bring changes in color personality.
Each open (abreviatura de quilate em inglês e quilate em alemão, often written as “k”) has a gold content of 4.166%, 18k=18*4.166%=74.998%, 24k=24*4.166%=99.984%
24K contains 99% ouro, 22K contains 91.7%, 18K contains 75.1%, 14K contains 58.5%, and 12K contains 50%.