Au750 refers to an alloy containing 75% gold and 25% 他の金属, 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, しかし、実際の金の含有量は 99.98%. 金とその製品の純度は次のように呼ばれます。 “色”. 金製品には2種類のカラーマーキングが市販されています: 1つはパーセンテージです, G999など, もう一つはKゴールドです, G24Kなど, G22K, とG18K. 私の国には金製品のマーキングと識別に関する規制があります, 通常は制作会社コードが必要です, 材質名, コンテンツインプリント, 等, 刻印がない場合は不合格品となります. The same is true internationally. But for some very fine products, it is allowed not to mark. National standard GB11887-89 stipulates that the gold content per opening (abbreviation of carat in English and karat in German, writing K) is 4.166%.
Au750 not only has the precious value of gold, but also has the advantages of strong ductility, high hardness, 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% 純金,
注記: 1. k: 金の純度を指します.
純度: 色の鮮やかさを指します. 科学的な観点から, 色の鮮やかさは、その色相が発する光の単一度によって決まります。. 単色光の特性により人間の目で識別できる色は、ある程度の鮮やかさを持っています。. 色相の違いは明るさだけではありません, でも純度も違う. 例えば, 顔料の赤は最も純度の高い色相です, オレンジなどの色, 黄色, 紫も色素が多い, 青緑は顔料の純度が最も低い色相です. In the daily visual range, most of the colors seen by the eyes are gray colors, つまり, 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 (abbreviation of carat in English and karat in German, 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% 金, 22K contains 91.7%, 18K contains 75.1%, 14K contains 58.5%, and 12K contains 50%.