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Jade information (excerpted from Baidu)

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    Jadeite, also known as jadeite, jadeite, jadeite, and Burmese jade, is a type of jade with a color of emerald green (called jade) or red (called jade).  It is a jade-grade polycrystalline aggregate mainly composed of jadeite, omphacite and sodium chromium pyroxene formed during geological processes.

    1. Common varieties

    1. Laokeng jade is commonly known as "Laokeng glass" in the commercial circles. It usually has a glass luster, its texture is fine and pure, and its color is pure, bright, rich and uniform emerald green; the jadeite grains of Laokeng jade are very fine.  , therefore, it is extremely difficult to see the "emerald nature" with the naked eye; Laokeng jadeite appears translucent to transparent under the illumination of light, and is the top or best grade of jadeite.

    2. The texture of ice jade is similar to that of Laokeng jade, which is colorless or less coloured. The characteristic of ice jade is that the outer surface is very shiny, translucent to transparent, as clear as ice, giving people the impression of ice-clear jade.  Feel.  If the ice jade has a variegated or intermittent vein-like blue color, it is called "blue flower ice", which is a common variety among ice jade.  Ice jade is often used to make bracelets or pendants.  There is no obvious difference in value between colorless ice jade and "blue flower ice" jade, and their actual prices mainly depend on people's preferences.  The ice type is upper-middle or mid-range jadeite.

    3. The jade structure of water jade is slightly thicker than that of Laokeng glass, and its gloss and transparency are also slightly lower than that of Laokeng glass, but similar or equivalent to ice jade.  It is characterized by being as transparent as water but with a soft luster. If you look closely at its internal structure, you can see a few "ripples", or a small amount of dark cracks and stone patterns. Occasionally, very few impurities and cotton willows can be seen.  Some experts say that water jade is light or colorless and of slightly inferior quality to laokeng jade.  It is a medium-to-high-grade and occasionally high-grade variety among jadeite.

    4. Violet Jade This is a kind of purple jade with a color like violet flowers. The jewelry industry also calls violet "chun" or "spring color".  Jadeite with "spring color" comes in high, medium and low grades. It does not mean that as long as it is violet, it must be valuable or top-grade. It must also be comprehensively evaluated based on quality indicators such as texture, transparency, and craftsmanship.  The purple on jade is generally not deep. According to the different shades of purple, the jade industry divides the purple in jade into pink purple, eggplant purple and blue purple. Pink purple usually has a finer texture and better transparency, followed by eggplant purple, and blue purple.  Of.

    5. White background green jadeite is characterized by its background being as white as snow, and the green appears very bright on the white background. The white and green are distinct.  This variety of jadeite is easy to identify: the green color is distributed in spots on a white background, with poor transparency and is opaque or slightly transparent; the jade piece has a fiber and fine-grain mosaic structure, but is dominated by fine-grained structure; observed under a microscope (  It must be magnified 30 to 40 times), and holes or uneven structures are common on its surface.  Most of this variety is mid-range jadeite. A few have clear green and white, bright green, good color and shape, and very harmonious color and background, which can reach mid-to-high-end grades.

    6. The color of jadeite is emerald green, which is distributed in veins and is extremely irregular; the texture is thick or thin, and translucent.  Its background color is light green or other colors.  Such as light gray or pea green, its structure is mainly fiber and fine- to medium-grained structure.  The characteristic of cyan jadeite is uneven green color.  Some are more dense, some are more sparse, and the colors are dark and light.  There is also a kind of structure in cyan jade that is only granular and lacks water feeling. Because of its rough structure, the transparency is often very poor.  Cyanine is a mid-range or mid- to low-grade jadeite.

    7. Red jadeite, which is bright red or orange-red in color, is easy to see in the market.  The color of red jade is formed after the jadeite crystals are formed, and is caused by the dispersion of hematite.  It is characterized by bright red or deep red, good red jade has a good color, has glass luster, and its transparency is translucent. Red jade products are often mid-range or medium-low-end products, but there are also high-end red jade: bright color and delicate texture.  , very beautiful, is a favorite jadeite with auspicious colors.

    8. Yellow-brown jade has a color ranging from yellow to brown or brown-yellow, and has a low degree of transparency.  Jade products of this series of colors can be seen everywhere in the market.  Their color is also formed after the formation of jadeite crystals, which are often distributed on the red layer and are caused by dissipation of limonite.  In the market, the value of red jade is higher than that of yellow jade, while the value of yellow jade is higher than that of brown-yellow jade, and the price of brown-yellow jade is second.  But there are also cases where the price is different from the norm due to people's preference and the uniqueness of the jewelry.

    9. Douzhong Jade is referred to as Douzhong. Douzhong Jade is a very common species in the jadeite family.

    10. Hibiscus jadeite is referred to as hibiscus jadeite. This variety of jadeite is generally light green, does not contain yellow tones, and is relatively clear and pure green, sometimes with a slightly pink base.

    11. Although the texture of horse tooth jade is fine, it is opaque and has a surface luster like porcelain.

    12. The texture of lotus root jade is as delicate as lotus root, and its color is light pinkish-purple (light spring color). It is a good raw material for handicrafts.

    13. The characteristic of wide film is that it can be shot under natural light.nbsp; 4. Grading

    1. Special grade: bright green (emerald green), apple green, glass ground (translucent, fine texture), uniform and bright, no impurities, no cracks.

    2. Commercial grade: green, oily green ground, slightly transparent, interspersed with translucent emerald green veins and spotted emerald.

    3. Ordinary grade: lotus root powder, bean green, light green, white and delicate, slightly transparent.  Opaque jadeite is generally only used for jade jewelry.

    5. Selection and Valuation Principles

    High-quality jadeite is called jadeite. Color, transparency, uniformity, shape, and knocking are the ways for ordinary people to appreciate or evaluate jade. Jade is divided into: glass type, dark old pit, old pit, gold wire, and oil clear.  , bean green, cyanine, melon green, etc.  Among them, glass-type jade is the top grade, and jadeite with extremely high "moisture content" and good transparency is also called "ice-type", which can be said to be a treasure among "glass-type".  Most consumers who buy jade bracelets may have this experience, that is, the merchant will knock the jade bracelet in front of you to listen to see if the sound is crisp and free of turbidity, and the one with crisp and melodious echo is better.  This is to prove that the jade crystal is tight, has good texture and has no cracks.

    1. Emerald green: The more delicate the green, the more valuable it is.

    2. Transparency: The tight internal crystal structure of jadeite has a better texture, and the transparency is also high. What we call "glass jade" is this type of jadeite with high transparency. For example, because the jade itself is rich in chromium, it forms ice jade, which is valuable.  Expensive and hard to find.

    3. Color uniformity: In addition to the delicate green color and high transparency, the color must be uniform to be top quality.

    4. Defects: Pay attention to whether there are cracks, spots, etc. These defects will affect the quality of jadeite.

    5. Shape: Most jade rings are oval and egg-shaped, and there are many other shapes. The quality and beauty of the shape also have an impact on the price of jade.

    6. Carving: The quality of the carving and its symbolic meaning have an impact on the price.

    7. Size and thickness: Of course, jade of the same quality will be more expensive if it is larger and thicker.

    8. Gloss: In addition to the above conditions, the gloss must be bright and not dark.

    6. Others

    The "species" of jadeite refers to the structure and structure of jadeite.  It is an important symbol of jade quality.  The jade from the new "kind" (also known as Xinkeng Xinchang, etc.) has a loose texture, coarser and uneven particle size, more impurity mineral content, more developed cracks and micro-cracks, but it does not necessarily have poor transparency and uniform specific gravity and hardness.  There is a decline.  The jadeite from the old "kinds" (also known as Laokeng Laochang, etc.) has a fine and dense structure, fine and uniform particle size, and no micro cracks. It has the highest hardness proportion and is a better quality jadeite.  But transparency is not necessarily good.  New and old species of jadeite are between new species and old species of jadeite. They are jadeite that remains on the hillside and has not been naturally transported or transported naturally over a short distance.  New species of jadeite are the raw materials for making jadeite products.

    The meaning of "ground" of jadeite is the degree of coordination between the cleanliness of the green part and the non-green parts of the jadeite, water (transparency) and color, and the mutual contrast between "kind", "water" and "color".  Folks call "di" "di Zhang" or "bottom barrier" etc.  The emerald and the outer part of the emerald must be coordinated. If the emerald is good, the emerald and the outer part of the emerald must have water. If the emerald is good, but the outer part of the emerald is poor in water, there will be more impurities and dirt, it is called "the color is good but the ground is poor".  The "water" and "seed" of jade must be coordinated. For example, the "seed" has a good old color, good water, and few impurities and dirty colors. They complement each other and strongly reflect the beauty, brightness and value of jadeite.  The structure of "ground" should be delicate, the color tone should be uniform, there should be few impurities and dirty colors, and there should be a certain degree of transparency. Only by taking care of each other can the "ground" be called good.  Good "ground" is called glass ground, waxy ground, and egg white ground.  Bad "land" is called lime land, shit land, etc.  Jade with poor water quality is called "bottom dry".

    The "water" of jadeite refers to its transparency, also known as water head.  The water of jade is related to the structure of jade, that is to say, it is related to the "species".  It is also related to the content of impurities. Those jade water with old seeds, few impurities, uniform particle size and high purity are good.  (Remember the website address: www.hlnovel.com
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