Do you know how to pick emerald: Colombia, or Zambia?
Chevrolet or Muzo? Bright green, or blue-green? Oil, or no oil?
A package, or no package body? To translucent, or to hazy? So many factors affect the value of emerald,
Want an objective, comprehensive, rational, smart choice, really not an easy thing!
This issue of "special planning" section invited senior experts, founder of Star City emerald Mr. Sun Quansheng and colleagues,
Share with you their tips on emerald 8 big purchases.

 In recent years, with the accelerating internationalization, China's color gem market has entered a period of rapid growth. The price of colored gemstones such as emerald has risen sharply over the past five years and has become one of the most concerned and appreciated value-added consumer items of jewelery.
    Objectively speaking, emerald entered the Chinese market late, and now most collectors are still hard-pressed to conduct a comprehensive and objective professional evaluation of their qualities. Only one or two one-sided perspectives can be used for selection. Many collectors have even plunged into buying misunderstandings: some only pick the color, some choose the clarity of the censors, others need no oil, and others look at the weight (heads).
    How to conduct a comprehensive and objective analysis of the quality of emerald? I hope my emerald business experience, consumers can help. Through the comparative study of emeralds in different producing areas, eight aspects of assessing the value of emerald are summarized:
First, the fire color
    Many people ignore the fire echoes for the evaluation of emerald quality. In fact, for gems, this one is still more crucial. Fire emerald better color, its value will be higher than the bad emerald fire.
    What factors will affect the emerald fire color it? First of all, the purity and transparency of the gem itself will certainly have a significant impact on the quality of the fireworks. Secondly, when the color of the gem is too dark, the fire color will also be affected. Finally, the pros and cons of gem cut will also strongly affect the fire color, when the waist is too thick or too thin, the fire color will be much less.
    To determine the specific operation of the emerald fire color is good or bad: under the appropriate light, gently rock the gems carefully observe the contrast of its brightness. The more bright part of the gem, the better its fire color: if the bright part can account for 60-75% of the surface area of the gemstone, indicating that the fire color is very good; if the bright part is lower than 25% of the gemstone surface area, Very poor.
Second, the color
    Emeralds of different origin, the color will be different. For example, although Colombia, Zambia and Brazil are some of the major producing areas for emeralds, the color of their emeralds is quite different. Even if the emerald produced in the same country, the color of different producing areas are not the same.
    For example, the Colombian emerald is characterized by a slight yellowish greenish color, most notably Chivor, but most of the emerald from the Muzo is blue in most of the country. Most Zambian emeralds are blue-green.
   Color is very important to colored gemstones, pick the color mainly depends on the color saturation, the higher the color saturation will be better. Quality emerald color is full of vitality, full of vigorous vitality, both rich colors, but also has a very high degree of saturation. However, some emerald due to the low saturation of color, will be grayed out to varying degrees, affecting its color value.
    When people choose emerald is not difficult to find, if you choose a good transparency and fire emerald color, even if the color is lighter, but also very beautiful.
Third, clarity
    Have to say that some consumers in the selection of emerald, its purity set an unrealistic high standards: as long as the internal inclusions (inclusions), texture, to determine its poor quality.
    In fact, this view is biased.
    The inclusions are common in the interior of various natural stones, and emeralds are no exception. Emerald has a shiny glass, good transparency, internal inclusions compared to some of the gems is also more easily seen.
    You know, emerald inclusions is actually a natural emerald identification symbol. We compare the inclusions in natural gems to "birthmarks," because this is an inevitable and natural birthstone of natural gemstones. It is also an important indicator that distinguishes them from artificially synthesized emeralds. Furthermore, emerald is one of the rarest gems of the Beryl family, mentioned in many articles on emerald "According to statistics, out of every million beryl, only one emerald can be found ". Shown emerald rare degree. It is not uncommon for mines to exploit the risk of emeralds being bankrupted for lack of a sufficient number of emeralds within a certain period of time.
    Such a rare emerald gem, its purity standards can not be equated with other gem-rich resources. Evaluation of its clarity, only in the same kind of gem comparison, more to see, more than what kind of clarity is poor, what kind of clarity is good, will naturally come to an objective and fair conclusion .
    In the west, emerald has a long history of use. Collectors have a more understanding and tolerance of its purity, and even nicknamed emerald "a garden of inclusions." The inclusion of emerald inclusions in the emperors' collection of emerald jewelry is also very rich, obvious and common. The British royal family in abundance of emerald jewelry hidden in the Tower of London museum is the most powerful testimony.
    Choose emerald, can learn from the Western perspective, with a larger tolerance of the emerald rich inclusions, as long as it does not affect the overall appearance, you can readily accept.
Fourth, transparency
    Clarity can be judged with the naked eye. However, some inclusions are very small, although not easily visible to the naked eye, but because of the large number, the formation of haze-like visual sense, to varying degrees, affect the beauty of emerald.
    In the selection, the use of similar methods of comparison will be more convenient. You can compare several similar color emerald, to find one of the best transparency of the one. Transparent good emerald, fire color usually corresponding well, higher value.
Five, cut type and cut
Emerald cut type, mainly divided into two categories: one is faceted cutting, such as emerald-cut and shaped cutting (including oval, round, drip type, heart type, olive type, pad type, etc.); One type is plain cutting (including oval, round, etc.).
    The same quality, weight emerald, using different cutting, cut type, the price will be subject to different effects. Usually under the same conditions, emerald-type cutting than shaped cutting unit price will be high. In addition, the faceted cut than prime cut prices will be higher. In cutting, the processor will according to the situation of raw materials, the finished product yield and quality of the pros and cons trade-offs, and then Shi Ti Yi, in order to bring higher profits.
    As for what kind of cut type, consumers can completely according to their own preferences and needs to decide. Plain cut emerald, the color is more rich, inclusion is not easy to be seen. Faceted cut emerald, will be more texture, showing a crystal clear feeling.
Six, oil content
    At present, most emeralds on the market are oily. why? Because miners used to emerald the new emerald wool that had been mined from the mines before it was emerald-processed. In my opinion, this is a natural soaking, the purpose is in the back of the cutting, grinding links, to avoid jewel caused by the sudden high-speed operation of cutting machine caused by burst high temperature burst. This is the miners' legitimate protective measures against emerald processing. When the gem cut is complete, the worker rinse the emerald and wash off the oil on its surface.
    During this process, the internal cleavage of the emerald is likely to be exposed during cutting. After the oil is soaked, the oil will go smoothly into the interior of the gem and remain there. This is why most emeralds contain different levels of oil. If the internal cleavage happens to be bare during cutting and grinding, it may be oil-free after cleaning. Oil-free emeralds are rare.
    From the investment point of view, higher quality, larger emeralds, oil-free or micro-oil will increase its rarity, more collection value. However, if consumers only want to buy an emerald that is not too heavy for everyday use, simply pursuing "oil-free" is not a rational choice. Because for the small particles of emerald, "oil-free" only raises the price through its rarity, and its appearance is not much affected.
    Its emerald greenness with medium and low oil content will not change its appearance even after a long period of time; however, if the oil content is too high, it may take two to three years as time passes Change - With the loss of oil, the surface of the stone will show some previously unknown texture, affecting its beauty. Therefore, I remind everyone in the face of "bargains", we must be more careful.
    All in all, there is oil does not mean that is not natural, no oil is not equal to the quality is good. A comprehensive understanding of all aspects of emerald, is the rational choice.
Seven, origin
    Emerald produced in Colombia, is the first choice of most current collectors. Colombia has a history of thousands of years of emerald mining, history has indeed produced many very bright colors, fireworks very good emerald. Unfortunately, Colombia's emerald production is becoming scarcer and prices have risen considerably.
    In recent years, the emerald produced in Zambia is a rising star on the market. These emerald because of the new mine, high output, increasing market share! Among them, large particles, high clarity, beautiful colors, good fireworks Zambian emerald, often found.
    Whether emerald is produced in Colombia or Zambia, as long as its high quality can have a good collection of investment value. If consumers are more concerned about cost performance, Zambian emerald is a better choice. Because compared to the same quality Colombian emeralds, Zambian emeralds are now much cheaper.
Eight, weight
    Weight alone to evaluate the value of emerald, unscientific, inaccurate. The author believes that the selection of emerald, we must first look at its fire, color, clarity, transparency, cut and cut, oil content, origin, and finally to assess its weight. Generally speaking, with the other seven aspects approaching, the heavier the emeralds are, the higher the unit price is.
    Evaluation of the international market in the absence of a reference, a rare high-quality large-grain emerald price assessment method: single emerald reference price = (the weight of the emerald) 2 × (1 carat equivalent emerald price ). For example, a 10-carat emerald, if its equivalent quality 1-carat emerald unit price is 50,000 yuan, then this 10-carat emerald price = 50,000 yuan X102, or 5 million yuan. Of course, refers to the quality of particularly high, so that it is more a reference.
  
    To sum up: In summary, the price of emerald, especially the price of high-grade emerald, we must conduct a comprehensive assessment based on these eight aspects. If consumers imagine buying diamonds, just a certificate to evaluate the emerald price, a bit impractical. Emerald selection is not difficult, just need to see more, ask more and more. Although every small difference affects their price, if you compare carefully, you will surely get a relatively more rational answer.