The number inside the ring usually represents the metal content or the weight of the diamond. For example, platinum rings often have PT900, PT950, 900, 950 these numbers represent the platinum content, of which the platinum content is ≥900% and ≥950%. Some diamond rings are also marked with a description of the diamond, beginning with a D and followed by a number. D is the first letter for diamond in English. For example, D050 refers to a 50 minute (0.5CT) diamond.
Some information about this ring will be printed on the ring produced by regular manufacturers, that is, the letters and numbers on the ring that we say. National quality requirements ring inner wall marking content: metal content (such as 18K, Pt950, etc.), stone weight (if the ring is set with diamonds or other gems, diamond weight such as 0.50ct, etc.), factory logo (logo or code), finger ring number and so on. If it is in the form of letters plus numbers, in general, the letters indicate the type of metal, and the numbers represent the purity.
1. Platinum ring
The beginning of platinum is marked with PT, PT900, PT950 these specifications.
900, 950 these numbers represent the platinum content, such as Pt900 refers to platinum material, platinum content ≥900%, the same can be inferred, PT950 is platinum content ≥950%.
2. Diamond ring
Diamond ring ring support because the material is not the same, so there are many kinds of English letters and numbers in the ring. For example: G18K, AU750, G750, PT900, PT950, PT990, PD900, PD950 and so on.
G18K, AU750, G750 stands for 18K gold material, that is, 75% gold content, relatively speaking, is the most suitable for diamond setting a material. PT900, PT950 is the mark of platinum, representing the jewelry containing 90% and 95% platinum.
PD900 and PD950 represent 90% and 95% of palladium, and PD is also the cheapest of these three gold.
Some diamond rings are also marked with a description of the diamond, beginning with a D and followed by a number. D is the first letter for diamond in English. For example, D050 refers to a 50 minute (0.5CT) diamond. D131, D075, refers to the main stone 1.31 carats, secondary stone 7.5 points (0.0075 carats).
3. Silver ring
The most common logo of the silver ring is S925 and Ag925, and S is the abbreviation of the silver word, meaning that the silver ring with a silver content of 92.5%, which is the basic standard of all silver rings, that is, the sterling silver ring.
Some rings are labeled s925, 13M, which refers to the 92.5% silver content, 13M refers to the size of the ring is 13.
4. Gold ring
The inner wall of the gold ring is usually engraved with: solid gold 999, G18K, AU750, G750 and other logos, solid gold 999 refers to solid gold, G18K, AU750, G750 is 18K gold, gold content is 75%.