How to distinguish platinum, how to distinguish platinum

Distinguish platinum can not just look at the PT logo to think that it is true, now many businesses are not formal, PT, PD logo is not clear. It's not platinum, but it's also marked with pt, and there are also those who pretend to be platinum. The first thing to distinguish platinum is its luster, and the luster of real platinum is white and blue.

Then it is to weigh its weight in the hand, and the real platinum has a pendant in the hand. It's important to remember to distinguish between these two aspects of platinum.

PT is platinum, PD is palladium, and PT999 is platinum with the highest gold content.

Platinum can be identified by imprints, by color, by specific gravity, by melting point, and by point test.

1. Identification by imprints.

In ordinary times, the authenticity of platinum can be identified by imprints, and some representations are usually seen on the surface of platinum, such as the common PT950, PT990, platinum 990 and other imprints, while other jewelry rarely has these marks, or looks very blurry, different shades.

2. Distinguish by color.

It can be identified by the color, the color of platinum is relatively bright, under the illumination of the light, you can see the dazzling feeling, while the fake color appears much darker, there is no color, or the color of silver is not as bright as platinum, there will be a feeling of gray.

3. Identification by specific gravity.

According to the specific gravity of the platinum can be identified from the fake, the texture of platinum is dense, the density is relatively large, in the case of the same volume, the platinum is put on the hand to weigh, it will feel an obvious sense of weight, and the fake or silver jewelry density is small, much smaller than the important.

4. Identification by melting point.

According to the melting point to identify the true and false platinum, the melting point of platinum is very high, generally with a welding torch can not melt platinum, after a certain high temperature, the color of platinum will not change after cooling, and silver jewelry or fake melting point is much lower, after melting the color will have some changes.

5. Identify by point test.

You can drop a few drops of mercury on the surface of platinum, if it is true, it will generally not have any chemical reaction, and the nature is stable, and it will not fade after a long time, while the fake one is easy to have a chemical reaction, and it is easy to change color after a long time, and the nature is unstable.

1. Imprint, true platinum manuscript eggplant is usually marked with pt, followed by a thousand fractions, that is, purity.

2. Color, the color of real platinum is bright, and the fake one has no color, and even a little dark.

3. The specific gravity of cracked real platinum is much larger than that of false platinum.

Platinum (PT) is a naturally occurring white precious metal. Platinum was discovered as early as 700 B.C., and it has been considered one of the most noble metals in the more than 2,000 years of human use of platinum.

The most straightforward way to tell the difference between platinum and other white metals is to look for the platinum proprietary mark.

Platinum jewelry must be engraved with the exclusive mark of platinum on the back or inner ring: platinum (platinum, white gold) or pt, and after the logo there is a thousandth of the purity (platinum content) indicating the purity of platinum, such as platinum (platinum, platinum) 950, pt950. At the same time, Chinese should be indicated in the product label of platinum jewelry, such as platinum 950 or platinum (pt) 950.

Recognising the platinum proprietary logo gives you assurance of platinum quality.

1. Color viewing method: pure platinum is white and brilliant, which can be distinguished from other white metals from the surface color.

2. Hand handling method: platinum has a high density, which can be distinguished by the weight comparison of materials of the same volume.

3. Melting method: the melting point of platinum is extremely high, much higher than that of other white metals, and the general welding torch cannot melt platinum, and the color of platinum remains unchanged after cooling.

4. Marking method: platinum jewelry has standard marks, which are usually expressed by the word pt in the world.

5. Gas spontaneous combustion method: platinum can be used as a catalyst to promote the combination of gas and oxygen in the air to release heat, so that platinum heats up, reddens and ignites the gas. So will jewelry 6If the jewelry turns red and heats up after a few minutes, it will be platinum.

7. Point test method: there will be no chemical reaction when mercury is smeared on platinum, and platinum will not be polluted.

The identification methods of platinum include color and luster method, hand method, and melting methodnotation and so on.

1. Look at the color method.

Pure platinum is white, the luster is brilliant, the color of white gold is white beige, and the color of ** is white. It can be distinguished by the surface color.

2. Hand handling method.

The density of platinum is up to, through the weight test of the same volume of materials, platinum has a heavy feeling, it is heavier than **, heavier than K platinum, and heavier than silver. You can also know how to distinguish the real from the fake platinum by hand.

3. Melting method.

The melting point of platinum reaches 1773 degrees, which is much higher than that of K platinum and **. Generally, the welding torch cannot melt platinum, so it is possible to know how to distinguish the real platinum from the fake, and the color of the platinum will not change after cooling.

4. Marking.

Platinum jewelry, whether it is rings, bracelets, earrings, has a standard stamp, which is internationally represented by the words pt900 or pt950, such as pt950 platinum color is 950.

How to identify white gold:

The most common white metals on the market are platinum and white gold, which are easily confused because they are both white on the outside, but they are actually two completely different metals. Platinum (PT) is a kind of pure white ***, because of its pure white color, so it can always maintain a pure white luster, and never fade.

The white color of white K gold (commonly known as white K gold) is not naturally formed, it is actually an alloy, which is mixed with 75 ** and other metals to show the white of the surface. Therefore, white K gold will fade and yellow after wearing it for a long time.

The most straightforward way to identify platinum is to look for the platinum proprietary mark inside the jewelry, pt or platinum. According to national regulations, the back of each piece of platinum jewelry must be engraved with the exclusive mark of platinum: pt or platinum (platinum), and after the mark, it must also indicate the purity of platinum, that is, the thousandth of platinum content, such as platinum (platinum) or pt950, pt990, pt999, the latter two are commonly known as foot platinum and thousand foot platinum.

The above content refers to Encyclopedia - Platinum.

Nowadays, there are many materials of jewelry, including **, silver, and platinum, and platinum is divided into platinum and palladium. In recent years, jewelry made of platinum may be more popular, because platinum has a bright color and is known as the king of platinum, so how to distinguish the authenticity of platinum?

1. Look at the color. Many people will think that platinum and ** are a bit similar, but the two are not the same texture. Platinum is silvery-white or off-white, bounding between the color of ** and nickel, and the texture is delicate and smooth.

The gloss of ** is white, and it is easy to be oxidized with black spots or black.

2. Weigh the proportion. Compared to palladium, platinum has a larger specific gravity of 15-22 grams. General**, the specific gravity is only grams. As long as we weigh the same size of platinum and ** jewelry with our hands, we can find the difference between them.

3. Fire. Pure platinum is heated or burned to cool its color. After being burned, its surface will show a reddish or black-red hue.

4. Bending. Pure platinum is easy to bend and straighten, its fineness is low, hard and brittle, and it is more laborious to bend. **The texture is soft and can be easily bent.

5. Mercury test. In addition to this, it can also be identified by taking advantage of the non-absorbent nature of platinum. Coated with mercury on the touchstone mill, if it absorbs mercury, it means that it is made of k-white gold made of **, ** and platinum.