4 steps to teach you how to correctly identify natural jadeite

There are various types of jade on the market. It is very important to know how to correctly choose the jade you like. Here are 4 steps to teach you how to correctly identify natural jade.

Jadeite, Hetian jade, topaz, Dushan jade, agate, Xiuyan jade, etc. are collectively called jade. Jade is a general term for various jades. Their production places are different and the prices vary greatly. Among them, the most precious jade is jadeite, which is hard jade. Its hardness is second only to diamond and it is called the king of jade. Only Myanmar has jadeite in the world.

Diamond hardness 10

Ruby Sapphire Hardness 9

Jade hardness 7.5~8.6

Glass 6.5

Jade 5.5~6.4

Generally speaking, it can be identified from the following three aspects: 1. First determine whether it is jadeite, other minerals similar to jade, or other materials. 2. If it is confirmed to be jadeite, that is, jadeite, it is also necessary to see whether it has undergone artificial chemical treatment. 3. Whether the color is real, natural or artificially dyed.

To identify the quality and authenticity of a jade product, the following points are for your reference:

① The color tones of jadeite can be roughly divided into the following six categories:

1. White, basically free of other impurity elements.

2. Red, contains the chemical element iron <Fc3+> <commonly known as jade>.

3. Green, containing more than 2% chromium <Cr> (commonly known as emerald green).

4. Black, containing more than 2% chromium <Cr> and iron <Fe2+>.

5. Yellow, contains element tantalum.

6. Purple, contains the elements chromium <Cr>, iron <Fe> and cobalt <Co>.

From the above, we can see that jade contains elements needed by the human body, and different jade colors contain different elements. Therefore, real jade is very beneficial to the human body, so you must be very cautious when purchasing jade products.

② The types of jadeite currently popular in the market can be divided into the following four categories according to their authenticity:

Grade A jade refers to natural jade that has not undergone any artificial chemical treatment except for cutting, grinding and polishing. The texture and color are natural. Due to the large amount of mineral resources and mining as well as the large demand among people. There are few good quality jadeite on the market at present. In particular, there are very few varieties with emerald green color and translucent base. Generally, varieties such as seedling green, spinach green, jade color or violet floating flowers are common.

A reliable and simple identification method is:

(1) Look, mainly look at the crystal transparency. Real jade has stronger transparency and oily luster. Observe with the naked eye under light. The texture is fine, the color is soft, the stone pattern is obvious, and the lines are floc-like. There are star-shaped, linear and flake-shaped flashes on the surface. There are some cloud-like things in the jade, which are like cotton wool.

(2) Listen. When real jade is knocked, it will make a clear and pleasant sound like "steel". If it is knocked, it will make a dull sound. If the jade itself has defects, such as internal cracks, hollowness, or partial deterioration, the sound when it is knocked will be different and become a "crackling" sound.

(3) Test: When real jade is scratched across glass, it leaves a scratch on the glass, but the jade itself remains intact. Jadeite feels heavy in the hand. Its density is 3.34 g/cubic centimeter, which is significantly higher than similar nephrite. Apply the smooth surface of jade to your face or lips and you will feel a cool sensation.

B-grade jade refers to jade that has had its surface flaws, impurities and yellow parts removed by chemical methods. Soak and corrode with strong acid to remove the "dirt" and "cotton" to increase transparency, and then use high pressure to inject epoxy resin into the micro cracks produced by strong acid corrosion to fill and consolidate the cracks. Since the internal rock structure of the jade has been destroyed during the chemical treatment process and has become loose, B-grade jade will easily reveal cracks on the surface.

Identification: (1) B-grade products have good color at first, but upon closer inspection, the color becomes dull and weird. When observed under light, the color transparency decreases.

(2) B-grade jade will gradually lose its luster, become covered with cracks and become ugly within two years. This is caused by the destruction of its original quality by strong acids.

(3) Density decreases and weight is reduced. With a slight impact, the sound becomes muffled and loses the crisp sound of the A-grade products.

C goods are completely artificially colored. It refers to dyed jadeite, which means that this kind of jadeite jewelry originally has no green color or is very light green, and the bright green color is artificially colored. Don't just look at the appearance, it is harmful to your body if you wear it for a long time.

Identification: (1) At first glance, the color is not right and looks evil.

(2) Looking closely under the light, the color does not exist naturally inside the jadeite crystals, but is filled in the cracks of the minerals, showing a network distribution with no color roots.

(3) When observed through a Charles filter, green turns red or colorless.

(4) Scrub with a strong eraser to remove the surface color or turn it brown.

For B and C grade processed jadeite, the color is too beautiful, even evil, and the water head is too transparent and fuzzy, feeling like gel. When observing the surface with a magnifying glass, there are very obvious continuous network acid etching marks. B-grade jade feels lighter and has a dull, unclear sound when it hits. There is also a simple identification method, which is to use a banknote detector and illuminate the jade with ultraviolet light. If you find a fluorescent reaction, you can be sure that it is B or C grade. A grade jade does not change color under ultraviolet light. Of course, some B grade jade does not have a fluorescent reaction, but any one with fluorescence can be confirmed to be not an A grade.

D-grade jade refers to fake jade, which may be made of synthetic glass, crystal, green aventurine, green medullary stone, green agate, and the common "Malaysian jade" and "Australian jade" on the market. Wearing fake goods for a long time is harmful to your body!

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