International Gold Number Code
The International Gold Number Code is a standardized system used to identify the purity of gold alloys. It is a four-digit number that indicates the percentage of gold in the alloy. The first digit represents the karatage of the gold, while the last three digits represent the fineness of the gold.
The karatage of gold is a measure of its purity. 24-karat gold is pure gold, while 18-karat gold is 75% gold and 25% other metals. The fineness of gold is a measure of its purity on a scale of 0 to 1,000. Pure gold has a fineness of 1,000, while 18-karat gold has a fineness of 750.
The International Gold Number Code is used to identify the purity of gold alloys for a variety of purposes, including jewelry, coins, and bullion. It is a convenient and easy-to-understand system that allows people to quickly and accurately identify the gold content of an alloy.
Here is a table of the most common International Gold Number Codes:
| Code | Karatage | Fineness |
|—|—|—|
| 24K | 24 | 1,000 |
| 22K | 22 | 916 |
| 18K | 18 | 750 |
| 14K | 14 | 583 |
| 12K | 12 | 500 |
| 10K | 10 | 417 |
The International Gold Number Code is a valuable tool for anyone who works with or is interested in gold. It is a simple and effective way to identify the purity of gold alloys.
原创文章，作者：杰克，如若转载，请注明出处：https://hengxing99.com/8154.html
