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In the US the standard for gold is 14k, which is 58.3% pure gold, and the rest alloy.
For your information:
10K Gold is 41.6% pure, the rest alloy
18k Gold is 75% pure, the rest alloy
24K is 99.99% pure
Most jewelers and people who buy gold jewelery like 18k gold, because it is hard enough to withstand wear. I hope you find this info useful. |
Randy
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For all intents and purposes 24 carat gold is pure gold and is ”manufactured” through the smelting process and is rarely, if ever, naturally found.
Following is a selection of information on the gold caratage system form the “World Gold Council.” Their home site is in the source links:
The Caratage System
Any caratage value lower than 24 is a measure of how much gold there is in the jewellery gold alloy. Thus 18 ct is 18/24ths of 100% gold = 75.0% gold. In fineness terms, this is described as 750 fineness, i.e. 750 parts of gold per thousand parts. The table below gives the various caratages and their equivalent gold content in percent or in fineness terms as recognised by international standards. This is not always exactly the mathematical value! For example, 22 carat is mathematically 22/24ths x 100 = 91.666% but the accepted international standard is 91.60%
Many countries only allow certain caratages of gold jewellery to be sold. For example, in the United Kingdom, one can make and sell 9, 14 ,18 and 22 carat gold jewellery but not 12 carat gold as the latter is not a recognised caratage standard by law. In some countries, jewellery lower than 12 carats (50% gold or 500 fineness) cannot be described as gold.
The advantage of making jewellery in caratages lower than 24 ct, apart from price, is the wide range of colour that can be achieved, from so called green, pale yellow, yellow, rose/pink to red as well as white, depending on the balance of other alloying metals used. The lower the caratage, the wider range of colour is possible. Additionally, properties such as strength and hardness are improved over pure gold, leading to improved wear and scratch resistance and less liable to distortion and damage.
The caratages of jewellery allowed by law varies from country to country In the U.K., for example, the following caratages are allowed: 9 (375), 14 (585), 18 (750), 22 (916), and 24 (990 and 999). In many countries, a large range of caratages is legally allowed but only a few are in common use. The dominant caratage also varies as shown in the next table: |
transekid
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It is gold, but if you want pure gold you won't find cause the substance gold wich appears in the periodic table is liquid, it need other materials to retain the aspect it takes as rings, neckaleces and others.. |
Big Kahuna
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From what I know, no it's not, pure gold is very vulnerable, it breaks easy, so they mix it up with other metals. |
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