International Gold Karat Purity
Karat is a unit of measurement used to express the purity of gold. It is defined as one twenty-fourth of the total weight of the alloy. Pure gold is 24 karats, which means that it is 100% gold. However, pure gold is very soft and malleable, so it is often alloyed with other metals to make it more durable.
The most common gold alloys are 18 karat, 14 karat, and 10 karat. 18 karat gold is 75% gold and 25% other metals. 14 karat gold is 58.3% gold and 41.7% other metals. 10 karat gold is 41.7% gold and 58.3% other metals.
The other metals that are alloyed with gold can vary depending on the desired color and properties of the alloy. For example, copper is often added to gold to make it harder and more durable. Silver is added to gold to make it whiter. Palladium is added to gold to make it more resistant to tarnishing.
The international gold karat purity standard is based on the fineness of the gold. Fineness is expressed in parts per thousand. For example, 18 karat gold has a fineness of 750, which means that there are 750 parts of gold per 1000 parts of alloy.
The international gold karat purity standard is used to ensure that gold jewelry and other products are of the correct purity. It is also used to protect consumers from fraud.
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