What does the mark on the diamond ring mean? First of all, diamond rings are usually marked with these data: G 18K, AU750, G750, PT900, PT950, PD900, PD950, etc. These represent the material and material content of the diamond ring. G 18K, AU750 and G750 represent the material of the diamond ring, which is 65438. PT900, PT950 and PT990 are labels of platinum, representing ornaments with platinum content of 90%, 95% and 99%. PD900 and PD950 represent 90% and 95% palladium respectively, and PD is also the cheapest of the three kinds of gold. Palladium has just come out and is favored by people, but its shortcomings are outstanding, and it will turn gray if it is left in the air for a long time.

This label usually represents the properties of the ring material metal. 18K gold belongs to gold and is an alloy of gold and other metals. 24K is the real pure gold, and 18K gold is suitable for jewelry. Therefore, the names of 18K platinum and 18K pure gold in the market are wrong, which is a statement that the merchants mislead consumers. According to national regulations, only platinum can be called platinum, 18K platinum can only be expressed in a popular way, and written expression can only be called 18K platinum. The title of 18K platinum will be misunderstood as impure platinum.

Platinum can only be marked with the beginning of PT, and there are generally several specifications such as PT900, PT950 and PT990.

Palladium is a member of the platinum group, and isomorphic substitution widely exists in platinum group precious metals, palladium and platinum. Pd and Pt have similar appearance and hardness, silvery white and metallic luster. Chemical properties are stable. Platinum and palladium are the two minerals with the smallest reserves in the platinum group, and they are also very rare. But it is strictly different from platinum: first, the palladium component is sealed as "PD"; Second, the price of palladium is nearly half that of platinum; Third, the specific gravity of palladium is lighter than that of platinum, and it will turn gray if left in the air for a long time.

In addition, some begin with d, followed by some numbers. D stands for diamond and is the first letter of the English word "diamond". For example, D050 refers to a diamond of 50 cents (0.5CT). D 13 1 d0075 refers to the main stone 1.3 1 carat, and the auxiliary stone is 7.5 points (0.0075 carat).

What does the lettering mark on the inside of the diamond ring mean? In addition to the above common symbols, diamond rings have some other symbols, some of which are company abbreviations, origin, manufacturers, brand labels and so on. Some of them are also marked with diamond cutting, clarity, color grade, etc.

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