1. Burmese jade, also known as jadeite, was once popular in the late Qing Dynasty and the early Republic of China: for example, a jade tube by Rong Lu, the interior minister of the Qing Dynasty, was worth 13000 taels of gold. In the mid-1930s, Yu Wang Tie Yuting in Beijing had a bracelet and sold it to Du in Shanghai for 40,000 silver dollars. Myanmar jadeite is bright and clean because of its high hardness. Moreover, good jadeite is bright and peaceful in color and has high preservation and collection value, so it is called "the king of jade". It is loved by many people who love and wear jade. Japan and New Zealand also regard jade as their "national stone". Due to the special geographical relationship that jadeite is produced in Qingdian, near China, and most of the finished products are processed in China, and the special preference of China people for jadeite, western countries generally consider jadeite as the "national jade" of China.

Second, the color of Burmese jadeite. ?

Due to different regional customs, the color of Burmese jadeite is slightly different. In the jade kingdom of Myanmar, jadeite can be divided into three categories, with a grade of 12. The domestic jewelry industry divides jadeite into more than 30 grades according to its color. Generally speaking, the tone of Burmese jade can be roughly divided into the following six types:

1, white, basically contains no other impurity elements.

2, red, containing chemical element iron < FC3+ >.

3, green, containing more than 2% chromium < Cr >.

4. Black, containing more than 2% of 〈Cr〉 and Fe < Fe2+ >.

5, yellow, containing tantalum.

6. Purple, containing elements < iron > chromium, iron, iron and cobalt.

In particular, the green color in Burmese jade can be worn regardless of status, status, age and gender, except for its bright color and excellent durability. Therefore, it conforms to the implicit, peaceful, Wen Ya and cordial character of China people. The social demand is growing day by day. Prices have also doubled or even hundredfold. At present, the price of a jade bracelet in the international market has reached 10 million yuan. Even Myanmar jadeite ornaments with slightly inferior jadeite color are expensive as long as they are genuine A goods with sufficient water head, clear technology and harmonious colors.

3. Myanmar jades on the market and their simple identification. ?

No matter from the mineral resources or mining capacity of Burmese jade, good jadeite is very limited, so some speculators and mercenary businessmen "take advantage of it". A large number of fakes, selling fakes, and profiting from them. Even in the emerald kingdom of Myanmar, fakes can be seen everywhere. Fake stones and ornaments can be seen everywhere. At present, there are four kinds of Burmese jade popular in the market, according to the level of authenticity:

Grade A goods are not only natural in texture, but also natural in color. Identification methods mainly focus on the following three points.

(1) Look before you leap. Because of the relationship between mineral resources and exploitation and the specific situation of people's large demand. At present, there are few good Burmese jadeites on the market. In particular, there are few varieties with green color and bright ground color. ?

(2) Generally, varieties such as Mabel Miao, spinach green, scarlet or violet floating flowers are common. ?

(3) Observed by naked eyes under the light, the texture is delicate, the color is soft and the stone lines are obvious; Slight impact, crisp and pleasant voice; Holding it in your hand has a heavy feeling, which is obviously different from other parts of the stone.

For grade B jadeite, commonly known as "dirty" jadeite with black spots, it is immersed in strong acid for corrosion to remove "dirty" and "cotton" to increase transparency, and then epoxy resin or substitute filler is injected into the microcracks caused by strong acid corrosion with high pressure to fill and consolidate the cracks. ?

(1) The color of B goods was good at first. If you look closely, the color will become evil. If you look at it under a lamp, the color transparency will be weakened.

(2) Within two years, B goods gradually lost their luster, were full of cracks and became ugly. This is caused by the strong acid destroying its original quality. ?

(3) The density is reduced and the weight is reduced. Slight impact, low voice, lost the crisp sound of a cargo.

Class c goods, completely artificially colored. ?

(1) At first glance, the color is not right and evil. ?

(2) Looking closely under the lamp, the color does not naturally exist in jadeite crystals, but is filled in the cracks of minerals, showing a network distribution of colorless roots. ?

(3) Observing with Charles filter, the green color becomes red or colorless. ?

(4) The surface color can be removed by scrubbing with powerful decoloring agent or turned brown.

D goods, D goods pretending to be jade ornaments mainly have the following two categories. ?

(1) jade. That is, other jadeites pretend to be jadeites. There are mainly Thai jadeite and Malaysian jadeite, Nanyang dushan jade, Qinghai jadeite, Miyu, Australian jadeite and Dongling stone. The differences between the jadeite mentioned above and Burmese jadeite are as follows: First, the hardness is low; Second, low density (light weight) and weak luster. ?

(2) Green glass and green plastic. Most of these substitutes are dull and ugly, and their luster is very weak. The relative density is very light, the hardness is low (it can be carved with nails), and there is no cold feeling.

The above methods are just my experience and understanding, and it really depends on science and technology and advanced technology to accurately identify them. Such as high magnification observation, measurement of density and thermal conductivity, infrared spectrum Raman test, etc.