International Gold Karat
Gold karat is a measure of the purity of gold, expressed in parts per 24. Pure gold is 24 karats, and as the karatage decreases, so does the purity of the gold.
The international gold karat system is the most widely used, and it is based on the following denominations:
* 24 karat: Pure gold, 99.9% gold
* 22 karat: 91.6% gold
* 18 karat: 75% gold
* 14 karat: 58.3% gold
* 10 karat: 41.7% gold
Gold jewelry is typically made from 10-18 karat gold, as pure gold is too soft to be used in practical applications. The higher the karatage, the more valuable the gold piece will be.
In addition to the international gold karat system, there are several other systems that are used in different parts of the world. These systems include the metric system, the British system, and the Indian system.
Here is a table that compares the different gold karat systems:
| System | 24 Karat | 22 Karat | 18 Karat | 14 Karat | 10 Karat |
|—|—|—|—|—|—|
| International | 99.9% | 91.6% | 75% | 58.3% | 41.7% |
| Metric | 1000‰ | 916‰ | 750‰ | 583‰ | 417‰ |
| British | 24 ct | 22 ct | 18 ct | 14 ct | 10 ct |
| Indian | 99.9% | 91.6% | 75% | 58.3% | 41.7% |
When purchasing gold jewelry, it is important to know which karat system is being used. This will ensure that you are getting the purity of gold that you are paying for.
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