For thousands of years, and in the history of humanity wrought gold and destroyed both cultures and civilizations. Even today, when the economy faced a springboard, remains the gold standard by which all other currencies. In the case of jewelry and precious metals, although it is more expensive than gold is still the most popular.
In the field of gold jewelry, however, some jewelry worth more than others. As 100% pure gold is too delicate for use in jewelry settings, it is alloyed with other metals like silver, titanium, nickel and palladium. Red or pink tones is achieved by adding copper in the mixture. Thus, there is gold in the jewelry industry uses its certification carat awarded based on a fixed percentage of pure gold content in the alloy.
In accordance with international standards of the World Gold Council, the following list of tasks carat quality, and where specific ct are most popular.
24K: 99,9% = pure gold (World)
24K: Minimum = 99.0% pure gold (world) allows
22K: 91,6% = (Indian Subcontinent)
21 CT: 87,5% = (Arabic)
19.2 carat = 80% (Portugal)
18K: 75% = (International)
14K: 58,5% = (U.S.)
10 ct: 41,7% = (min, USA)
9 CT: 37,5% = (standard WK)
8 carats: 33,3% = (min, Germany)
In addition, both the World Gold Council requires that struck karat gold reference which will be sold on the open market, it is much easier to buy the price of gold jewelry that you see.
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