International Gold Number Code
The international gold number code, also known as the fineness code or karat code, is a standardized system used to indicate the purity of gold alloys. It is a three-digit number that represents the percentage of pure gold in the alloy, expressed in karat units.
Definition of Karat
Karat (abbreviated as “K” or “kt”) is a unit of measurement that expresses the purity of gold alloys. Pure gold is 24 karats, and the lower the karat number, the lower the purity of the gold. For example, 18-karat gold is 75% pure gold, while 14-karat gold is 58.3% pure gold.
International Gold Number Code
The international gold number code consists of three digits, each representing a different purity level:
* First digit: Indicates the minimum purity of the gold alloy in karats.
* Second digit: Indicates the maximum purity of the gold alloy in karats.
* Third digit: Indicates the allowable deviation from the second digit, which is typically 0 or 2.
Example
The code “750” indicates a gold alloy that has a minimum purity of 18 karats (75%) and a maximum purity of 19 karats (79.2%), with an allowable deviation of 0.2%.
Common International Gold Number Codes
Some common international gold number codes include:
* 750: 18-karat gold
* 585: 14-karat gold
* 375: 9-karat gold
* 916: 22-karat gold
* 999: 24-karat gold
Uses of the International Gold Number Code
The international gold number code is used in a variety of applications, including:
* Identifying and valuing gold jewelry
* Determining the purity of gold coins and bullion
* Specifying the purity requirements for gold alloys in manufacturing
Benefits of the International Gold Number Code
The international gold number code provides a clear and standardized way to indicate the purity of gold alloys. It is recognized worldwide and helps ensure that consumers and businesses can accurately compare the purity and value of gold products.
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