When buying jewelry, you will find that the jewelry is engraved with symbols composed of numbers and letters or a series of English letters. So why are these marks engraved in the jewelry? What information do these symbols imply?
National Standard GB11887 "Regulations and Naming Measures for the Purity of Jewelry Precious Metals" stipulates that precious metal jewelry must be engraved with marks, and the mark content includes: manufacturer/brand name or code logo, name and purity of precious metal materials, and the quality of the main stone inlaid diamonds, etc.
These symbols are jewelry marks and are very important reference indicators for the value of jewelry. If you are preparing to buy a piece of jewelry for yourself and understand the marks of these jewelry, you will have a clearer understanding of the jewelry you are buying.
Elika Jewelry—"AU999" full gold chain
Gold and silver precious metal jewelry
precious metal jewelry marks are generally expressed in the corresponding precious metal English abbreviation or first letter plus the number of precious metals containing a thousandth of precious metals, or you can also use Chinese characters directly.
Gold: It is represented by the gold content of GOLD/G or AU+. For example, "GOLD990"/"G990" or "AU990" all represent gold with a gold content of 99%, which is pure gold. Usually 5G gold, ancient gold, etc. are made of full gold, and they are all represented as full gold "G999" or "Full Gold 999" or "AU999".
K gold : K gold is a new era gold jewelry composed of pure gold and a certain amount of other precious metals. "K" represents the unit of measurement, and in principle "24K" is the full gold, so 1K≈4·167%, that is, 18K represents a gold jewelry with a gold content of 75%, marked as "AU750", "G750" or "G18K", "8K", etc. For example: 14K gold=AU583=G583, etc.
Golding: It is to use the electrolysis principle to plate an extremely thin layer of gold on the surface of jewelry made of silver or copper. The thickness of the gold-plated layer in my country is not less than 0.5um, and the gilded jewelry is marked as "GP" or "KP".
Pack of gold : Wrap the gold foil on the surface of metal materials such as silver and copper. The gold foil is required to have a color of no less than 10K, and its weight is not less than 1/20 of the total weight of the material. It is marked as "KF".
Forged gold: essentially a gold wrap, it is forging gold foil on the surface of other metal jewelry blanks under high temperature and high pressure conditions. The color of gold foil is required to be greater than 10K, and the total amount of forged K gold is not less than 5% of the finished product, and it is marked "GF" or "KGF".
Elika Jewelry—"G999" ancient gold pendant
Silver jewelry: Generally, it is marked as "silver/S+Silver content thousand fractions", such as "silver 990"/"S990" all represent silver jewelry with 90% silver content, that is, full silver , and can also be directly marked as "full silver". For example, the common "S925"/"Silver 925" is a pure silver with a silver content of 92·5%. Sometimes it is directly represented by the silver chemical symbol "Ag+Silver content", such as "S925" and "Ag925".
platinum (or platinum ): The English abbreviation "Pt", so it is usually expressed as "Pt+containing platinum amount" or "platinum + containing platinum amount". For example, "Pt990" and "platinum 990" both mean that the jewelry contains 99% platinum. Generally, if the platinum content is greater than 99% is considered "foot platinum", and is directly marked as "foot platinum" or "Pt999".
Generally, platinum containing no less than 85% of the platinum can be called platinum, that is, platinum 850 is the same as "platinum 850"/"Pt850".
Note: The precious metal Palladium looks very similar to platinum, with a chemical symbol "PD", and its jewelry metal mark is similar to that of platinum labeled "PD+palladium content", such as "PD950", but the two do not belong to the same category, and there are differences in value, so you need to pay attention to distinguishing it when purchasing.
Elika Jewelry——"S925" Silver Bracelet
Elika Jewelry——"S925" Silver Bracelet
Diamond Inlay Jewelry
inlay jewelry. National standards stipulate that the quality of diamonds with the main stone above 0.10ct is required. It is usually expressed by the first letter of diamond English "diamond" and the weight of diamond carats. For convenience, there can be no decimal point or carat unit "ct" in the mark. For example, "D050" is equivalent to "D0.5ct", indicating that the jewelry is inlaid with 0.50 carats of main diamond. For jewelry inlaid with multiple diamonds, the upper and lower case letter "D/d" is usually distinguished. For example, "D050d0075" or "D050d0075ct" both indicate that the main diamond and 0.075ct diamond are embedded.
Elika Jewelry - K gold diamond couple pair ring
Jade Jade Jade , Caibao, etc. generally provide professional appraisal certificates, with detailed information on it, including weight, quality grade, color, origin of the raw stone, cut, etc.
Regular brand jewelry of regular manufacturers will have jewelry marks and provide corresponding precious gem identification certificate . Therefore, when purchasing jewelry luxury goods, please pay attention to choosing regular brands to avoid more unnecessary troubles and losses.
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