14K means it contains about 58% pure gold.
my country’s national standard GB11887-89 stipulates that the gold content per K is 4.166%, and the minimum purity per thousand of 14K is 585, which means it is not allowed to be less than 58.5%.
In addition to the gold component not allowed to be less than 58.5%, 14K gold may have various formulas for other components:
Color 14K:
Red
Gold 58.5
Silver 7
Copper 34.5
Dark yellow
Gold 58.5
Silver 15
Copper 26.5
Light yellow
Gold 58.5
Silver 20.5
Copper 21
As for the price, due to the large fluctuations in gold prices, I have not paid attention to it. The prices of several formulas should not be completely consistent - the difference should not be big, and the price of silver is not high. It’s hard to say, I’d rather ask the merchant for a quote.
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K number of gold jewelry
The gold used to make jewelry is not pure gold, because pure Gold is too soft to withstand wear and tear. Therefore, since ancient times, pure gold has mostly been mixed with other metals and used to make gold ornaments, which is called "gold ornaments". The unit for determining the pure gold content in jewelry is called "gold level", which is called "Carat" in English and generally called "kai". According to the English pronunciation, it is also referred to as "K", so gold jewelry is also called "K gold". Pure gold is 24K. 1K means that the amount of pure gold contained in gold jewelry accounts for 24%. 14K means it contains 58% pure gold. In the UK, gold jewelery is available in 10K, 14K and 18K, with only a few available in 22K. In Europe, gold jewelry is generally 14K, 18K and 22K. In France and Sweden, the minimum standard is 18K, while Switzerland, the Netherlands, Belgium, Luxembourg, Norway and Denmark stipulate that gold jewelry must not be less than 14K. West Germany and Italy allow less than 8K. Gold jewelry comes in various K numbers and colors. When gold is mixed with copper, silver, nickel and palladium of different specific gravity, it turns green.
Calculation of gold content
The "K" in gold products indicates its gold content. The gold content of gold products = X÷24, X is the number in front of "K", and 24K is pure gold. For example, the gold content of 22K gold = 22÷24 = 91.7%.
If you want to calculate the gold content of gold products, you can also calculate it like this: gold content of gold products = X÷24×g, g represents the weight of gold products. For example, the gold content of 4 grams of 18K = 18÷24×4 grams = 3 grams (g).
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K gold can be made into various colors according to needs. K gold jewelry is popular in various colors internationally. There are all, the most common ones are yellow and white. K gold is divided into color gold alloy and white gold alloy according to color. The most commonly used color gold alloy in jewelry is Au-Ag-Cu(-Zn) alloy; most white gold alloys are Au-Ag-Ni(Cu, Zn) and Au-Ag-Pd(-Zn, Cu) System alloy. When gold is mixed with 25% palladium or nickel, zinc, etc., it will become white. Its main component is gold. This is called white K gold, commonly known as K platinum.
Yellow K gold can only be made of a ternary alloy of gold, silver and copper. Yellow is the true color of gold. Most of the gold used in commercial jewelry is this color. It maintains the true nature of gold as much as possible. color.
Red K gold can be made of a ternary alloy of gold, silver and copper. However, if the proportion of copper is increased, the color will be closer to the copper tone, which is not very bright. Bright red K gold is an alloy of gold and aluminum, which is brittle and difficult to process. Reduce the proportion of aluminum to form purple K gold. Its lavender color is quite attractive, but it is also brittle and difficult to process.
Green K gold can be made of a ternary alloy of gold, silver and copper. However, if cadmium, the color-causing element that causes green, is added into any K gold at an amount of 2%-4%, it will almost always be Can form green K gold.
The basic composition of blue K gold is an alloy of gold and iron, but its production process is extremely confidential and has been patented around the world. According to reports, cobalt atoms are injected into the surface of K gold.
The gray color of gray K gold usually comes from the effect of a higher concentration of iron. Gray K gold can be made by adding iron to high-quality K gold.