Generally, most people think that gold jewelry is equal to gold.
However, there is much jewelry with gold characters, but as a matter of fact, it is quite different, such as pure gold, K gold, gold-clad, gold-plated, and so on.
If you are looking for gold jewelry, it would be better that knowing types of gold jewelry are not the same because there are different fineness, purity, and color.
The more expensive jewelry like bullion and K gold jewelry may cause counterfeits.
So how do we identify and distinguish these gold jewelry?
Speak to bullion first.
Bullion jewelry is golden yellow, bright and soft, with a hardness of 2.5, a density of 19.32g/cm3, a melting point of 1064 degrees Celsius, and good ductility.
One gram of pure gold can stretch into a filament of 2,500 meters long. And it also can be forged into 9.6 square meters of gold foil, which shows the better ductility of gold.
As far as the current standard is concerned, gold with a purity of more than 990 can be called bullion, so how to identify it?
Don't miss out on these four steps of its identification!
Step one: Imprint
According to international regulations, all precious metal jewelry must have an imprint on the inside of jewelry. The imprinting is required to indicate its content and the manufacturer. Anything with a gold content greater than 990 can be called pure gold.
Step two: Weigh
The density of gold is 19.32g/cm3, which is more than twice the density of copper.It feels like the hand will fall when you hold the gold, and although the copper is heavy, there is no feeling of falling.
Step three: Listen to the sounds
When gold jewelry falls freely on the concrete floor, there will be a muffled sound, while its imitation is a crisp sound of clang. In addition, pure gold jewelry has a small elasticity and will not bounce when it falls to the ground.
Because the imitations have a small elasticity, they will bounce up and down several times.
Last but not least step: Hardness
The hardness of bullion jewelry is 2.5 as the hardness of human fingernails, so fine marks can be drawn with fingernails.
Pure gold has the value of preservation, appreciation, and inheritance. Over time, it becomes more and more splendid, has the imprint of the times, and has investment value at the same time. However, because the pure gold is soft and the color is too bright, it is not suitable as the first choice for daily wear.
Therefore, we will use K gold jewelry with higher practicality as a must-have choice for our daily ootd fashion. So what is K Gold Jewelry in yellow?
There is everything you need to know about it!
The K gold jewelry is an alloy of gold, silver, and copper.
According to the content of gold, K gold series jewelry of different K numbers can be made, mainly including 22K, 18K, and 14K.
In Asia, people love high-K gold jewelry, such as 22K and 18K, but in Europe and America prefer 14K gold and 10K gold jewelry.
When it comes to K gold jewelry, what are the differences between high-k jewelry and low-k jewelry?
Firstly, the color of 18K gold jewelry is yellower than that of 14K and 10K gold jewelry.
The color depth of yellow K gold series jewelry is related to the gold content and the ratio of silver and copper in the K gold.
Secondly, you can see the gold jewelry with the same K numbers differ from each other when their silver is more than copper. The yellow shine will be lighter.
On the contrary, if the copper is more than silver, it will look darker.
Thus we could differentiate the K gold by some simple methods.
The easiest way to identify K gold jewelry is to observe the outlines.
Generally, European and American manufacturers put the digital marks of the gold content in K gold on the back of the K gold jewelry, such as 750, 585, 375, and factory inscription, while China and Hong Kong are mostly marking with K numbers, such as 22K, 18K, 14K along with factory records. In addition, the hardness of K gold jewelry is above 3.5 with a solid and smooth surface. You can't scratch it with a copper needle.
Apart from K gold Jewelry in Yellow, many of us may say that K Gold Jewelry in White is also purchased more in our life.
The gold jewelry of the white K gold series is slightly bluish-yellow, and the imprints are of the WG.
According to the combination, it can find out as the following two types:
The first alloy is covered by gold filling with a mix of silver, nickel, and zinc called K platinum in the business world.
18K white gold is part of 75% gold and 25% silver, nickel, and zinc. 14K K white gold is an alloy composed of 58.5% gold and 41.5% silver, nickel, and zinc.
The second type is gold and palladium, copper, nickel, and zinc alloys. That is, 334K white gold and 266K white gold 334K white gold is K white gold composed of 3 parts of gold, 3 parts of palladium, 4 parts of copper, nickel, and zinc, which is also called 60% K white gold. 226K white gold is K white gold composed of 2 parts gold, 2 parts gold, and 6 parts copper, nickel, and zinc, also known as 40% K white gold.
Some manufacturers in Hong Kong believe that the price of 334K white gold and 18K gold is the same as that of 22K white gold and 14K, and they also call it 18K gold or 14K gold and stamped with 18K gold and 14K gold.
If you want to shop the K platinum, you could tell them right from the followings.
The method of identifying K white gold is to look at the imprint. luster is not as bright as platinum, a bit black. The hardness is 3.5, not as hard as platinum (hardness of 4.3). The density is also lower than that of platinum.
In the K gold series, in addition to the gold and white gold jewelry we love very much, there is also the red color.
Red Gold Jewelry
The K gold jewelry of the red series is mainly made of gold and copper, with a small amount of silver alloy, and the color is light red. It is the type of K gold jewelry that Europeans love most, and Russians especially prefer red 14K gold jewelry. If you also like red K gold, you can try to consider and choose suitable accessories from the following aspects.
The identification method is the same as the yellow series K gold jewelry except that the color is red, and the inside of the jewelry is also marked with the mark of the gold content and the factory mark.
Wrapped Gold Jewelry
The metal composition of any part of pure gold jewelry and K gold jewelry is the same, while the wrapped gold jewelry is two or more kinds of metal attached or forged together, wrapped with each other, and the metal composition is different in different parts. Its surface is all gold, while the inside is copper and silver.
You can make a conclusion by carefully observing whether there are places where gold is plated at the joints of the jewelry or in the angular depressions.
Besides, its density is small, it is relatively light to be weighed by hand, and has no falling feel. It has a crisp "dang beep" sound when it falls on the ground, and it will jump if it has good elasticity.
Generally, there is no imprint, and sometimes the GP logo is printed.
At this time, the gold-encrusted gold jewelry in the United States should draw your attention, which is also known as Gold Filling in the United States. Gold-clad jewelry is a layer of gold foil pressed on a copper or silver sheet. The thickness of the gold foil is between 10 and 50mm. Because the thickness of gold-clad jewelry is thicker than that of gold-plated jewelry, its appearance is similar to that of gold jewelry.
This kind of gold-clad jewelry is marked with KF in the United States. If the gold foil is ISK gold, it is marked with 18KF on the inside of the jewelry.
Regarding wrapped gold jewelry, we can also learn about the gilding process, although Gilt is an ancient gold-plating process, which is to evenly coat a layer of the thick slurry of gold and mercury on jewelry with low value such as copper and silver, and then bake it at a low temperature. Then the surface of the copper is attached, and then flattened and polished.
Currently, this method is rarely used.
Because the surface of the wrapped gold jewelry has a very thin layer of gold, it is deceptive to a certain extent, but it still retains the characteristics of copper products, such as low density.
It is easy for us to discover it by weighing it gently with our hands, and it will jump continuously after falling to the ground. Generally, there is no mark. You should pay attention to spot it when you buy it.