Scientific jade identification, it is particularly important to understand these points

Jade was discovered by the Chinese. For hundreds of years, people of all ethnic groups in western Yunnan went through untold hardships to introduce jade to the inland and coastal areas. They also paid the price of blood and lives to finally introduce jade to the world, making jade art shine.

Ever since jadeite went global and became part of the world's precious jewelry trade, its price has skyrocketed. Of all precious gemstones, only jadeite's price is unaffected by the world economy.

Since the mid-1980s, the price of high-end jade has skyrocketed nearly three thousand times and is still rising. As the price and status of jadeite rise, more and more artificially processed jadeite products are being sold as high-end jadeite in order to make huge profits. At this time, you need to master some methods of identifying jadeite to avoid being blindly confused and deceived when purchasing.

The Jadeite Nature

The jadeite texture is also called "fly wings". When the crystal grains that make up the jadeite are relatively large, the jadeite texture is particularly obvious. If the crystal particles that make up jade are very small, the "jade quality" is rarely seen, such as old pit glass jade, its "jade quality" is difficult to see with the naked eye. After artificial treatment, no "fly wings" are visible on the jadeite.

Emerald Cotton

Cotton refers to the translucent, slightly transparent white substance in the form of patches, stripes, filaments, and waves inside the jade. Although the presence of cotton will more or less affect the beauty of jade, it is also one of the identification criteria for jade. The cotton in jade also reflects its natural properties to a certain extent. If you see pure jade without impurities and the price is relatively low, you must be cautious.

Jadeite color roots

Color root is a sign used in jade identification to determine the authenticity of jade green.

On a full green jadeite jewelry, if you can see a point or a thin strip of slightly darker green, and the slightly darker green gradually transitions to the relatively lighter green, it is called a color root. But high-end and top-grade jadeite has a very uniform green color, with no difference in depth or lightness, and no color roots. The color of natural jade has a color root, the color is visible and unevenly distributed. The color of dyed jade is divergent, invisible, and has a floating feeling, and is distributed in a silk screen pattern on the surface.

Identification skills of genuine jadeite

1. Visual perception

1. Look at the color of the "good" and "bad" (natural and dyed) Natural jade color has color roots, color is visible, and uneven distribution; dyed jade color is diffuse, invisible, has a floating feeling, and is distributed on the surface in a silk screen pattern

2. Look at the transparency (quality). The transparency of natural jade is uneven, with clear boundaries between transparent and opaque parts.

3. Look at the surface gloss, smoothness and finish. Natural jade has bright gloss and a smooth and round surface. B-grade and coated jade have rough surfaces and weak gloss. Hetian jade (white jade) has an oily gloss.

4. Check the cleanliness of the interior. A-grade goods have a small amount of impurities, especially dirty spots and yellowish-brown oxidation rust (secondary color). B-grade and B+C-grade goods are clean inside, and generally do not have oxidation rust.

5. Look at the performance of jadeite texture, jadeite texture - the intuitive expression of the size of jadeite mineral particles in jadeite and their mutual combination relationship. A. Fly wings (jade and counterfeit varieties). When jade is observed under reflected light, the cleavage surface of the jadeite mineral that can be seen with the rough surface underneath is the reflection of the "fly wing". On a smooth surface, the "fly wings" B and the "orange peel effect" can also be seen through the illumination of a spotlight. When natural jade is observed through reflection on the polished surface, it will show bumps and depressions of different sizes and directions - the orange peel effect. The boundaries between the ridges and valleys of A-grade jadeite are gradually and smoothly transitioned, while the boundaries between the ridges and valleys of B-grade jadeite are separated by acid-etched cracks. The orange peel effect will not appear in the quartzite jade and Xiuyan jade that imitate jadeite. C. Structure - Flocs. When illuminated by side light or bottom light, the internal structure of jadeite shows a cotton-like substance, also called "cotton". The "flocs" of A-grade jadeite are in the form of long interwoven strips and are relatively delicate. The "flocs" of B-grade jadeite are relatively coarse and have a loose structure. The "flocs" of water-foam or quartzite jade show large features such as sugar granules.

6. Look at the craftsmanship. A-grade products have finer workmanship and better polishing, while B-grade products and B+C-grade products have poorer workmanship and poorer polishing.

2. Feel

Weighing: It has a high specific gravity and feels heavy. Xiuyan jade, Dushan jade, dyed quartzite, and water jade are lighter.

Rub with your hands: A-grade jade is relatively smooth, B-grade jade is relatively rough, and coated jade feels sticky; jade feels cool to the touch, while glass feels warm

3. Ear feeling

When A-grade jade is knocked, it makes a crisp sound, like a metallic sound, and the bracelet will echo. When B-grade jade or other jades are knocked, they make a dull sound, and the bracelet will not echo. The above methods are all methods summed up by predecessors based on experience. In fact, the accuracy rate is very high. The most accurate method still requires the use of instruments for scientific identification. (Identified based on the structure, physical characteristics and chemical composition of jadeite)

Identification standards for jadeite

Color, transparency, uniformity, shape, and sound are the methods that most people use to appreciate or evaluate jade, and they divide jade into: glass type, dark old pit, old pit, gold wire, oil clear, bean green, flower green, melon green, etc.

Among them, glass-type jade is the best quality, and the one with extremely high "water content" and good transparency is called "ice type", which can be said to be a treasure among the "glass types".

Most consumers who buy jade bracelets may have had this experience: the merchant will knock the jade bracelet in front of you to listen to whether the sound is crisp and clear, and the crisp, melodious and echoing ones are the best. This is done to prove that the jade has dense crystals, good texture and no cracks.

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