International Gold Karats
Karat is a measure of the purity of gold, expressed in twenty-fourths. Pure gold is 24 karats, while gold that is mixed with other metals is referred to as alloyed gold. The higher the karat, the more pure the gold.
The use of karats to measure gold purity is an international standard. In most countries, gold jewelry is stamped with its karat number, such as 14K or 18K. This indicates the percentage of gold in the alloy.
Common Gold Karats
The most common gold karats used in jewelry are:
* 10K: 10 parts gold, 14 parts other metals (41.7% gold)
* 14K: 14 parts gold, 10 parts other metals (58.3% gold)
* 18K: 18 parts gold, 6 parts other metals (75% gold)
* 22K: 22 parts gold, 2 parts other metals (91.7% gold)
* 24K: Pure gold (100% gold)
Karatage and Gold Content
The karatage of gold indicates its gold content in parts per 24. For example:
* 14K gold contains 14 parts gold out of 24, which is equivalent to 58.3% gold.
* 18K gold contains 18 parts gold out of 24, which is equivalent to 75% gold.
Other Metals Used in Gold Alloys
Gold is often alloyed with other metals to increase its strength and durability. The most common metals used in gold alloys are:
* Silver
* Copper
* Zinc
* Palladium
* Nickel
Choosing the Right Karat
The choice of karat for gold jewelry depends on factors such as:
* Durability: Higher karat gold is more pure and softer, while lower karat gold is stronger and more scratch-resistant.
* Cost: Higher karat gold is more expensive than lower karat gold.
* Color: Gold alloys can have different colors depending on the metals used. For example, high-karat gold is more yellow, while gold alloyed with copper has a reddish hue.
In general, 14K and 18K gold are popular choices for jewelry, as they offer a good balance of purity, durability, and cost.
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