Gold content 999 What does 999 mean

Represents the purity of **.

The gold content of the thousandth fraction is not less than 999 is called thousand-foot gold.

It is the highest value in the nomenclature of jewelry condition.

The imprint is 1000 pure gold, 999 gold, gold999 or g999. **The imprint of jewelry includes the manufacturer's code, material and purity, such as: X Gold 990, X Au990, X Pure Gold, etc.

Among them, the letter X is the manufacturer code. When using different materials or different purity *** to make jewelry, the material and purity should be indicated separately. When the jewelry cannot be printed because it is too thin or too small, etc., it should be accompanied by a logo containing the content of the imprint.

Summary. Hello, I'm glad to answer your questions. Difference: **Yes** content is, we call it pure gold. The ** of 9999 is the content, and the ** of the four 9s is higher and the purity is higher. **A valuable item that we all love.

What is the difference between ** and 999.

Hello, I'm glad to answer your questions. Difference: **Yes** content is, we call it pure gold. The ** of 9999 is the content, and the ** of the four 9s is higher and the purity is higher. **A valuable item that we all love.

999 is the content of, we call it a thousand pure gold.

The first one made a mistake, sorry.

999 gold refers to the gold content, generally known as 1,000 pure gold. Pure gold is the highest value in the nomenclature of jewelry fineness.

It's a thousand pure gold. Thousand-foot gold refers to the gold content of not less than **. Pure gold is the highest fineness of jewelry.

Pure gold refers to the gold content of not less than 99%. The imprint on the jewelry is "pure gold" and "990 gold". 24K gold is often considered pure gold and becomes "100%", but the actual gold content is, discounted.

**There is no difference between the two and 999, the way of expression is different.

Hello, I'm here for you to ask you a question<>

China's ** gold content is 4 90,000 pure gold means 1,000 pure gold 3 9 is 1,000 pure gold, representing ** gold content of 999%, 4 9 is 10,000 pure gold, representing 999 gold content%, 10,000 pure gold is not within the scope of the national standard, not recognized by the state, is a concept and gimmick made up by some businesses. 999** means that its gold content is, and 9999** means that its gold content is, and the gold content of 9999** is higher than that of 999**, and usually, the purer **, the more expensive **.

Summary. The gold content of 999% refers to the purity of. Purity refers to the proportion of gold in the body, usually expressed in thousandths. Therefore, the gold content of 999% is the proportion of gold content in **.

What does gold content 999 mean.

You see if this is pure gold.

The gold content of 999% refers to the purity of yellow bent wide gold. Purity refers to the proportion of gold in the buried circle, which is usually expressed in thousands. Therefore, 999% of the gold-bearing cavity is the proportion of gold content in **.

How did it not react.

The gold content of 999% refers to the purity of yellow bent wide gold. Purity refers to the proportion of gold in the buried circle, which is usually expressed in thousands. Therefore, 999% of the gold-bearing cavity is the proportion of gold content in **.

Well, thank you.

Dear to you, this is bright yellow from the color point of view, it is pure gold, and I will teach you a few tricks.

You use a magnet to suck and see if you can catch it.

Dear and yours is 999% is already pure gold, pure gold refers to the purity of 99% and above metal, that is to say, the gold content of 990% and above can be called pure gold.

What do you think. Dear, I look at the color and the content here is pure gold.

Dear, judging from your **, it belongs, and there are several verification methods that need to be verified in kind.

Yes

Theoretically, only 100% gold content can be considered pure gold honor shirt, but in reality it is impossible to have 100% **. Therefore, the state stipulates that as long as the gold content is above, it can be called pure gold, and the gold content of 999 is 999 gold, and the gold content of 999 gold is, so 999 gold is pure gold.

999** is also called thousand-foot gold, the color of this ** is golden yellow, and its Mohs hardness is similar to the hardness of human nails, softer and lower hardness. In fact, 999 thousand pure gold is the highest gold content of ** jewelry, and it is often marked on this kind of jewelry: thousand pure gold, 999 gold, gold999 or g999.

Methods for identifying ** purity

1. Listen to sounds.

The purity of pure gold and pure gold jewelry is very high, it is really calm, and the sound of jewelry landing or colliding with each other will also be low and calm, which is the sound of "click", and it will not move when it lands; When the color difference, low purity or even false ** falls to the ground or collides with each other, it will emit a "dangdang" metal sound, sometimes a beating sound, and it will jump after landing. But don't bump it too hard and be careful of the deformation.

2. Fire method.

Pure gold is extracted at an extreme high temperature and cooled before shooting, ** will not change color when exposed to fire, but generally iron ore will turn black when exposed to fire. If the fire has been burned, the ** mixed with more other impurities will be burned black, while the high-purity ** will not change color and still shine gold. But don't burn it for too long, otherwise the deformation will not be good.

Gold means gold content above.

This kind of color is commonly known as Wanzu gold or Sijiu gold in the industry, which is reddish yellow, soft in texture and good in ductility. However, it should be noted that China stipulates that the gold content of more than 99% is collectively referred to as pure gold, and even the surface of jewelry made of pure gold can only be marked with pure gold.

Extended Information: Gold is an elemental form of the chemical element gold (AU), which is a soft, golden-yellow, corrosion-resistant element. Gold is one of the rarest, more precious and most highly valued metals.

Internationally, it is generally measured in ounces, and in ancient China, it was "two" as the unit, which is a very important metal. It is not only a special currency for reserves and investment, but also an important material for the jewelry industry, electronics industry, modern communications, aerospace industry and other sectors.

**There are several types, in addition to K gold with other metals, it is also divided into pure gold and hard gold. The texture is soft, and the purity of the higher the texture. The ** content of pure gold and hard gold is more than 99%, but the hardness is far apart.

Pure gold is currently the most common, although the concept refers to 100% gold content, in reality, the purity is not 100%. **The hardness is Mohs hardness, and the hardness with slip attack ** can generally be pulled hard to pull it out of shape.

Hard gold is actually a very special kind of **, the special electroforming process has changed its own crystal structure, greatly improving its hardness, the hardness of hard gold is, is nearly four times the hardness of pure gold, but stupid brother to use hard gold to complete a variety of complex, exquisite shapes.

**Maintenance:

1. The chemicals of detergent will change the color of gold, so you should take off your gold jewelry before doing cleaning work.

2. Avoid direct contact with highly volatile substances such as perfume and hairspray, otherwise it is easy to cause the fading of gold jewelry.

3. Take off the gold jewelry when swimming, so as to avoid chemical changes on the surface after touching the sea water or pool water.

4. Wrap it in flannel cloth and then put it in the jewelry box to avoid friction and damage.

5. **Relatively soft and easy to deform, so do not pull necklaces and other accessories to avoid deformation.

6. Pure gold jewelry will have a chemical reaction when it encounters mercury, and white spots will appear, and it can be restored to its original color as long as it is grilled under the mountain with an alcohol lamp for a while.