(1) color

Good color is the first requirement. At present, the most pleasing color is bright green (green tender). Although the top grade color is dark green, it is too dark and makes people feel too dull. Therefore, the top grade dark green is not as high as bright green in price. Green is the best jade, and the value of red and purple jade is only 1/5 of green jade. If jade contains red, purple, green and white, it is called "Fulu Xi Shou"; If it only contains red, green and white, it is "Fu Lushou". If it is monochrome jade, the color is better.

(2) Pass

High transparency has a great influence on the value of jadeite. Transparent jade gives people a cool feeling, while opaque jade, no matter how green and tender the color, gives people a dull feeling and lacks vivid aesthetic feeling. Generally, transparent jade is called "glass seed", translucent jade is called "ice seed" or "Guanyin seed", and opaque jade is called "hibiscus seed" or "taro seed".

Transparent and crystal clear as glass, no dirty spots, no chaff and no astringency is the top grade. Translucent and opaque jade are called intermediate jade and ordinary jade respectively. Before and during the Qing Dynasty, jade with red, green and white colors was called jadeite. In modern times, jadeite refers to generally transparent jade. At present, jadeite is mostly transparent and green.

(3) uniforms

The color of jade is uniform. Although it contains white and green, the color is uneven, so the value is very low. The uniformity of color is directly proportional to the numerical value. The price difference between the whole piece of green jade and only some green jade is several figures; The distribution position of color also has a great relationship. A little green in the conspicuous place is naturally better than the green distributed on the edge.

(4) Shape

The shape of jade can be processed into different styles according to different aesthetic requirements, and there is no special standard. Unlike other precious stones, jadeite is valued by weight. The value of jade mainly lies in its shape, size and thickness. The bigger and thicker the jade, the more valuable it is. On the contrary, the price of small and thin jadeite will be worse. In addition, its shape is also very important, because most people in China buy jade with the psychology of seeking good fortune and avoiding evil. If the appearance of jade has the shape of a badge, such as fish (more than one year), peach (longevity), coin (making money into treasure) and so on. Will attract buyers and sellers more than ordinary flowers and plants.

(5) Knock on the door

Jadeite often has cracks and cuts, which are generally not easy to observe. If you knock with a metal bar or gently throw jade on the counter, you can tell whether there is a crack from the clear voice. The louder, the better.

If you choose a jade bracelet, the sound will be crisp when you knock. If the jade itself has flaws, such as cracks, cavities or local deterioration, the sound will be different. That feeling is like a defeat, and the sound will become a "click" sound.

(6) according to

When you pick up the jade and look at it in bright light, you can see the color and defects of the jade in an unobstructed view. Sometimes jade that looks perfect on the surface is found to be flawed when photographed. In addition, you can also see the color distribution through the action of taking pictures, and distinguish whether it is natural color through illumination. At the same time, synthetic jade (fake jade) can't escape the checkpoint of "taking pictures". It's just that the skill of "taking pictures" needs experienced people to be mature enough, and ordinary people may not see why.

Emerald has black spots and flaws that are not easy to find with the naked eye. As long as you take pictures with a magnifying glass of 10 times, you can have a panoramic view.

The quality of jade can be divided into 10 grades, and each grade can be subdivided into three grades: upper, middle and lower. Among them, white jade has the lowest value regardless of color and transparency.

Natural jadeite is characterized by slight light color, without light blue (commonly known as evil color). There is also a synthetic jade, which is made of jade powder, crystal and salt water, and looks like a dark "old pit jade". The identification method is very simple, because it is different from natural jade in proportion. It can be said by hand or with a balance, and the heaviest one is the real jade.

At present, some exquisite fake jade is often mixed in the market. The general methods to identify fake jade are watching, listening and testing.

(1) Look

Mainly depends on the crystal transparency, internal structure, luster and so on. Real jade is transparent, oily and shiny, with natural patterns, and the internal fiber state is not easy to imitate.

2. Listen

Real jade sounds crisp, while fake jade sounds dull.

(3) measurement

Mainly to measure hardness. With the glass plate (friction hardness of 5.5) as the standard, except jadeite and turquoise, stripes can generally be drawn on the glass plate, and jadeite itself is complete. Fake jade is generally soft and can't scrape the glass.

Common fake jade is generally made of plastic and glass. They are all amorphous materials with low hardness and low density, and they are also the essential characteristics of materials. Plastic, for example, can be picked with a steel needle or floated gently in your hand. Glass is bubble-like under light or sunlight, and amorphous under polarizer (there is no periodic change of light and shade when rotating), and there are raw materials for making spiral stripes.

As the saying goes, "value for money", especially in the jewelry industry. There is absolutely no such thing as buying good goods cheaply. Usually, cheap goods are mostly fakes. So when we buy and sell, we can infer from the price that good jade can't be sold at a low price. So when we saw a beautiful jade and asked the price, we found it was very cheap. The first reaction is that there is something wrong. You must not be greedy and cheap, so as not to be deceived. That is available.