What is K gold?

First, the introduction

K gold (or gold) is an alloy of gold and other metals. K Jin's "K" is the writing of the term "Karat". The complete notation is this: Karatgold (K gold). The method of calculating the gold content with "K" is based on a carob tree on the Mediterranean coast. The carob tree has a light red flower, and the pods are about 15 cm long. The beans are brown and can be made into glue. No matter where the tree grows, the size of the beans is exactly the same, so in ancient times, people used it as a standard for measuring weight. Over time, it becomes a unit of weight for measuring precious, subtle items. At that time, the measurement of diamonds and gold also used this unit, which is “Karat”. It was not until 1914 that "Karat" was stipulated as a standard internationally.

Second, the meaning and calculation method of K gold

18K or 23K is a kind of mark, and K is the gold content, that is, the content of gold, the relationship between K number and gold content: Auwt%=K/24×100%. As far as the level of technology is concerned, it is not possible to extract pure gold materials with a purity of 100%. Therefore, the gold standard K indicating the pure gold content in gold products is generally referred to as pure gold as 24K gold, but it is theoretically only 100% gold, which does not exist. Therefore, in the national standard, the gold content of the merchant's gold jewelry should not use the "24K gold" non-standard standard method. Since the pure gold is 24K, that is, the theoretical gold content is 100%, 1K means that the gold product contains 1/24 of pure gold, about 4.166%, and 18K gold represents 18/24 of gold, which is 75% of pure gold. The rest are other materials such as silver, copper, nickel and other precious metals.

The gold content of each opening is (the national standard in brackets):

8k=8×4.166%=33.328%(333‰)

9k=9×4.166%=37.494%(375‰)

10k=10×4.166%=41.660%(417‰)

12k=12×4.166%=49.992%(500‰)

14k=14×4.166%=58.324%(583‰)

18k=18×4.166%=74.998%(750‰)

20k=20×4.166%=83.320%(833‰)

21k=21×4.166%=87.486%(875‰)

22k=22×4.166%=91.652%(916‰)

24k=24×4.166%=99.984%(999‰)

note:

24k gold is often considered to be pure gold, which is "100%", but the actual gold content is 99.99%, which is 23.988k.

Third, the characteristics / advantages of K gold

1 price advantage

The first feature of K gold is reflected in the price. The price of K gold is much lower than platinum or gold. Because K gold is an alloy containing 75% gold plus other metals such as copper. Compared to platinum, K gold is cheaper, but it is more prominent than platinum in diamonds/colored stones.

2 hardness and toughness

K gold has higher hardness and toughness than platinum, gold and silver. Therefore, K gold can be used to design and produce many beautiful and detailed jewelry. Therefore, in the market, K gold jewelry is more than gold, platinum and other jewelry types. Molding is much more, K gold jewelry can be well shaped, not so easily deformed. Moreover, because of the high hardness of K gold, these K golds have become the most solid metal inlaid with precious stones.

3 persistence

The surface of the K gold jewelry is usually coated with a thin metal crucible to enhance the brightness and whiteness of the K gold surface, so the color of the K gold jewelry is compared to silver products or other white alloy jewelry. Can stay longer.

4 recycling convenience

There are many jewellery stores on the market that recycle old gold and K-gold jewellery, but there are very few channels for recycling platinum jewellery. Therefore, you can send K-gold jewellery that has been outdated or worn for a long time to the gold store to trade-in. Then re-select the styles you like.

5 colors and colorful

Compared with the single color of gold and platinum, K gold can be made into various colors according to needs. The internationally popular K gold jewelry has various colors, and the same jewelry also has different colors. Nowadays, the common K gold color on the market is “rose gold”, which is composed of 75% gold, 21% copper and 4% silver. The color is pink and charming.

Fourth, various colors of K gold

1 yellow series of K gold jewelry

The yellow series of K gold jewelry (referred to as yellow K gold) is an alloy of gold and silver and copper. The gold content can be made into K gold series jewelry with different K numbers, mainly 22K, 18K, 14K, 10K and 8K. Asians love high-K-gold jewellery, such as 22K and 18K, Europeans and Americans like 14K gold and 10K gold jewelry. The color of the yellow K gold series jewelry is related to the content of gold in K gold and the ratio of silver to copper. The color of 18K gold is yellower than the gold jewelry of 14K and 10K, and the gold jewelry of the same K number is light if the silver is more yellow than copper. If the copper is more yellow than silver, it is deep.

2 white series of K gold jewelry

The white gold jewelry of the K gold series (referred to as white gold) is white with a slight yellowish yellow color. The imprints are marked with WG imprint. The combination can be divided into the following two types: the first one is mainly gold and silver, nickel and zinc. The combination of alloys is called white gold in the business world. The 18K K gold is made up of 75% gold and 25% silver, nickel and zinc. 14K white gold is an alloy of 58.5% gold and 41.5% silver, nickel and zinc. The second type, which is mainly composed of gold and palladium, plus an alloy of copper, nickel and zinc, is used internationally as the basis for the share of each metal in K gold. Currently there are only two varieties. That is, 334K white K gold is white K gold composed of 3 parts of palladium and 4 parts of copper, nickel and zinc. 226K white gold is 2 parts of gold, 2 parts of palladium and 6 parts of white, nickel and zinc. gold.

3 red series of K gold jewelry

The red gold K-jewelry is made of gold and copper, with a small amount of silver alloy, and the color is reddish. (referred to as rose gold)

4 color series of K gold jewelry

The color series of K gold jewelry is made by pressing different colors of K gold into thin slices, which are arranged in different directions according to the color, and the forged side is used.

The method is to make the sheets together.

Five, K gold maintenance

1 Place each piece of K gold jewelry in a separate jewelry box or drawer to avoid scratching.

2 Regularly clean the K gold jewelry by immersing the K gold jewelry in warm soapy water, gently rubbing off the grease with a soft brush, then rinse with water and dry with a hair dryer.

3 Due to the high degree of serviceability of gold jewelry, care should be taken not to pull the necklace and other accessories frequently to avoid entanglement on the hair.

4 When doing housework, it is best to remove the K gold jewelry, because the liquid such as detergent will make the color of the K gold jewelry dim.

5 Generally, K gold jewelry is worn at the last step of dressing, because chemicals such as perfumes and hair sprays can cause damage to K gold jewelry.

6 Do not wear K gold jewelry to swim, in addition to easy to lose, salt water and chlorine water will also damage K gold jewelry.

Six, K gold cleaning tips

1 Generally, when it is cleaned, it can be immersed in alcohol for a few minutes and then taken out. The general sweat stain will be volatilized together with alcohol. After scouring the water, wipe it off.

2 When you often wear sweat and dirt, you can use the old toothbrush with a neutral cleaning solution or a commercially available jewelry cleaning solution to lightly brush the bottom of the pedestal, as well as the crevices at the diamond. Otherwise, the jewel will be tarnished because of the overall transparency. .

3 Ultrasonic cleaning provided by the general store, but be careful to check whether the claws are loose before cleaning. Otherwise, it will be loosened due to its high-frequency vibration, and the probability of the stones falling on the setting will increase.

4 In addition to cleaning, the surface of the K gold will be covered with fine wear marks due to long-term friction, and also reduce the brightness. The K gold surface can be polished by K gold cloth on weekdays, but it is better to be 2-3. Once a year of polishing and fine plating, the jewelry will be able to return to the beautiful and bright light.

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