As a common alloy, K gold can be calculated according to its gold content. The difference between 14K gold and 18K gold lies in the different gold contents. Since 24k is pure gold, according to the calculation formula of 1K= 1/24, the gold content of 14K is almost 58.3%, and that of 18k is 75%. This shows that.

Generally speaking, the gold content of 14K gold is lower than that of 18K gold, and the content of other metals is higher than that of 18K gold. Therefore, 14K gold has higher hardness and toughness than 18K gold, but both of them can be inlaid with various gems.

2. Different hardness

Generally speaking, the gold content of 18K gold is higher than that of 14K gold, so other metal elements of 18K gold are less than that of 14K gold, so the hardness of 18K gold is lower than that of 14K gold, and the hardness is smaller. However, the hardness of 18k gold jewelry is not as great as that of 14k gold jewelry.

3. The imprint of14k gold is different from that of 18K gold:

14K gold jewelry is marked with: G 14k, G585, AU585 or gold 585.

18K gold ornaments are marked with: G 18k, G750, AU750 or gold 750.

4. Different values

Because 18K gold (relative to 14K gold) has high gold content, workmanship and aesthetics, the price of 18K gold is much higher than that of 14K gold, but overall, the price is moderate, and it belongs to the metal with relatively high neutral price of decorative metals. Many people will choose 18K gold ring as the marriage proposal ring when choosing marriage proposal ring or wedding ring.

5. 14K gold and 18K gold are different in setting gems:

18K gold is mostly used for setting precious diamonds and precious stones. 14K gold is mostly used for low-priced Shihao and Zhu Bei because of its low gold content (18K gold is also used for setting Shi Hao, pearls, Zhu Bei and crystals). Simply put, using 18K gold as a support or inlay will increase the cost of jewelry, and the value is also high. If 14K gold is inlaid or supported, the price of jewelry can be reduced.

Extended data:

The measurement method of K gold is:

Pure gold is 24K (that is, 100% gold content), and 1K gold content is about 4. 166%. The method of calculating gold content with "K" comes from a carob tree along the Mediterranean coast. The carob tree has red flowers and pods about 15 cm long. Bean kernels are brown and can be used to make glue. No matter where this tree grows, the size of the bean kernel is exactly the same, so ancient people used it as a standard to measure their weight.

Over time, it has become a unit of weight to measure precious and subtle items. At that time, diamonds and gold were also measured in this unit, which is "carat". It was not until 19 14 that "carat" was stipulated as a standard internationally.

According to international standards, there are 24 kinds of K gold, namely 1k to 24K. However, the types of K gold used as jewelry are less than these, and the jewelry materials used in all countries in the world are not less than 8K. In this way, in fact, the kind of K gold that really counts as jewelry is 17.

Among 17 kinds of K gold materials, 18K and 14K are the most widely used, and they are the main jewelry raw materials in jewelry industry in various countries. In order to enrich the expressive force of various kinds of K-gold abroad, K-gold with different colors was synthesized by adjusting the matching coefficient of other alloys without changing the content standard.

According to the famous Japanese jewelry magazine "Gem Four Seasons", there are 450 kinds of gold ratios in 20 13 years, and 20 kinds are the most commonly used. For example, there are six kinds of 14K: red, red yellow, dark yellow, light yellow, dark yellow and green yellow; There are five kinds of 18K: red, reddish, yellow, light yellow and dark yellow.

Baidu encyclopedia -K gold

Baidu encyclopedia-18K gold

Baidu encyclopedia-14k gold