What are the gold units of measurement? How to measure the purity of gold?


At present, it is generally used to use gram as gold measurement unit in China. Although metric system is adopted in China, this gold measurement unit in China is different from the customary measurement unit "ounces" agreed in the international market. Domestic investors must first get used to the difference in this unit of measurement when investing in gold.

The gold measurement units of various gold trading markets in the world are different, mainly including the following:

1. Ounces. In Hong Kong, it is also known as "ace". It is both a unit of weight and a unit of length. When expressing a unit of weight, an ounce is also called a troy ounce. It is specially used as a unit of measurement for precious metals such as gold. 1 oz = 31.034768 G.

2. Municipal units. The municipal unit is a commonly used unit of measurement in China's gold market, mainly including Jin and Liang. The conversion is as follows: 1 catty = 10 Liang 1 liang = 1.607536 troy ounces = 50g.

3. Japan two. Japan two is the trading unit of measurement used in the Japanese gold market, and its conversion is as follows: 1 Nippon Liang = 0.12057 troy ounces = 3.75g.

4. Tora. Tora is a special unit of measurement for gold trading, which is mainly used in the gold markets of New Delhi, Karachi and Mumbai in South Asia. The conversion is as follows: 1 tora = 0.375 troy ounces = 11.6638 grams.

5. Cao Pingliang. In old China, the Caoping unit was also used as the unit of measurement for gold trading. Caoping Liang is a steelyard system unit in the late Ming and early Qing Dynasties in China. Its conversion is as follows: 1 jin = 16 Caoping Liang 1 Caoping Liang = 1.00471 troy ounces = 31.24997809g.

6. Disk. Before liberation, China also used a gold trading measurement unit called "pan". Its conversion is as follows: 1 plate = 70 Cao Ping Liang = 4.375 Jin.

What are the gold units of measurement? How to measure the purity of gold?

Because in the gold market, the purity of gold is generally expressed by K, such as 24K gold, 22K gold, 18K gold, etc. As Chinese consumers have higher requirements for the purity of gold ornaments, the more common varieties of gold ornaments in the Chinese market are 24K gold and 18K gold; however, in Europe and the United States, people have a greater demand for the beauty of gold ornaments, so there will be many low purity gold jewelry in the consumer market, such as 12K gold and 14k gold.

According to the national standard gb11887-89, the gold content of each carat (abbreviation of carat and German karat, often written as "K") is 4.166%. Therefore, the gold content of each carat is (the national standard in brackets) respectively

12K=12*4.166%=49.992%(500‰)

18K=18*4.166%=74.998%(750‰)

24K=24*4.166%=99.984%(999‰)

24K gold is often regarded as pure gold, but the actual gold content is 99.98%, converted to 23.988k.

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