International Gold Karat
Gold karatage is a measure of the purity of gold, expressed as a fraction of 24 karats. Pure gold is 24 karats, so an 18-karat gold item contains 18 parts gold and 6 parts other metals.
The international standard for gold karatage is based on the following system:
* 24 karats: Pure gold (99.99% gold)
* 18 karats: 75% gold (18/24)
* 14 karats: 58.33% gold (14/24)
* 10 karats: 41.67% gold (10/24)
Gold karatage is often stamped on gold jewelry and other items to indicate its purity. For example, an item stamped “18K” or “18kt” is 18-karat gold.
The karatage of gold can affect its color, hardness, and value. Higher-karat gold is more pure and has a richer color, but it is also softer and more expensive. Lower-karat gold is less pure and has a paler color, but it is harder and more affordable.
The choice of gold karatage depends on the intended use of the item. For example, 18-karat gold is often used for fine jewelry, while 14-karat gold is a good option for everyday wear and 10-karat gold is commonly used for costume jewelry or other industrial applications.
It is important to note that the international gold karatage system is different from the carat system used to measure the weight of diamonds and other gemstones. A diamond carat is equal to 200 milligrams, so a 1-carat diamond weighs 200 milligrams.
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