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List of contents for this article:
- 1、Are there internationally recognized standards for grading jadeite?
- 2、Jade grading (jade grading standard)
- 3、Is there an internationally unified grading standard for jade?
- 4、Are there fake Hualin International jade
Are there internationally recognized standards for grading jadeite?
At present, there is no universally recognized and unified jade grading standard in the world. Different countries and regions mainly adopt their own grading systems, the most influential of which is China's national standards, but this is also mainly applicable to the domestic market. The American Gemological Institute (GIA) is the world's authoritative gemstone appraisal organization. The GIA has not launched a widely recognized jade grading standard.
At present, there is no internationally unified grading standard for jade. Different countries and regions formulate their own evaluation systems mainly based on their own market habits and cultural preferences, which makes jadeite quality judgments different around the world. Reason for the lack of unified standards The quality evaluation of jadeite involves multiple factors such as color, transparency, texture, clarity and craftsmanship, and these indicators are difficult to accurately quantify.
There is no global unified grading standard for jadeite. The domestic mainstream adopts the national standard for "Jade Classification"(GB/T 23885-2009) to divide it into 5 formal grades. There is also a general informal grading system for species color in the industry, which usually includes 5-6 common levels.
At present, there is no single universally adopted jade grading standard in the world, but China's national standard "GB/T23885-2009 Jade Classification" has extensive influence in the industry and is often used as an important reference basis. This standard mainly targets green and colorless jadeite, and classifies it from multiple dimensions. Green jadeite grading is comprehensively evaluated based on color tone, chroma, lightness, transparency, texture and clarity.
Classification standards International standards: There are mainly six levels, namely AAA, AA, A, B, C, and D. Among them, AAA level is the highest level, which represents high purity, good gloss, perfection and no cracks; while D level is the lowest level, with poor color, obvious cracks, and many defects. Domestic standards: They are mainly divided into five levels, namely special level, first level, second level, third level and fourth level.
The U.S. market pays more attention to the overall aesthetics and commercial value of gemstones, and has higher requirements on color saturation, uniformity and whether cutting maximize the luster of gemstones. China Hong Kong is an important jade trading center in the world. Hong Kong's appraisal agencies (such as the Hong Kong Jade Appraisal Center) have formed a set of market-recognized evaluation methods in practice. Its standard is similar to the national standard of the mainland of China, but it is more flexible and closely integrated with market conditions.
Jade grading (jade grading standard)
International standards: There are mainly six levels, namely AAA, AA, A, B, C, and D.
The official classification of the national standard is based on five comprehensive indicators: color, transparency, texture, clarity, and cutting work. The national standard of "Jade Classification" divides jade into five levels: special grade: all indicators reach the top level, such as emperor green glass species. The color is pure and rich, extremely transparent, delicate and without obvious flaws, and regular cutting work. It belongs to collectible-level treasures.
The national standard for jade grading is GB/T 23885-2009.
The grading of jade is mainly based on five aspects: type, water (transparency), bottom (clarity), color (color), and process (craftsmanship). It can also be graded according to dimensions such as planting water, color, and collection value. The details are as follows: Grade one based on type, water, bottom, color, and work: the particle size is less than 0.07mm, the structure is fine and dense, and there are no mineral particles and composite primary cracks under a 10-times magnifying glass.
Proposer of the Tango standard (2C2T plus process evaluation standard): proposed by "Experts Choose Jade in this way" edited by Tango and Tang Huiming. Comprehensive considerations: This set of jade grading methods has been simplified, integrating color, clarity and grain surface, transparency, structure, jade plain surface, jade carving, zero carving, raw marking and other aspects to form a unique and novel grading criterion, allowing consumers to better understand the jade grading standard.
Is there an internationally unified grading standard for jade?
At present, there is no internationally unified grading standard for jade. Different countries and regions formulate their own evaluation systems mainly based on their own market habits and cultural preferences, which makes jadeite quality judgments different around the world. Reason for the lack of unified standards The quality evaluation of jadeite involves multiple factors such as color, transparency, texture, clarity and craftsmanship, and these indicators are difficult to accurately quantify.
At present, there is no universally recognized and unified jade grading standard in the world. Different countries and regions mainly adopt their own grading systems, the most influential of which is China's national standards, but this is also mainly applicable to the domestic market. The American Gemological Institute (GIA) is the world's authoritative gemstone appraisal organization. The GIA has not launched a widely recognized jade grading standard.
There is no global unified grading standard for jadeite. The domestic mainstream adopts the national standard for "Jade Classification"(GB/T 23885-2009) to divide it into 5 formal grades. There is also a general informal grading system for species color in the industry, which usually includes 5-6 common levels.
Classification standards International standards: There are mainly six levels, namely AAA, AA, A, B, C, and D.
Are there fake Hualin International jade
No jade in the wholesale market dares to say that it is 100% authentic. Only experts can identify it. Dear, the Shangxia Jiuhualin International area is the largest jade distribution center in China. Of course, there are real and fake jade, but merchants will generally tell you if there are fake goods. If you want to ensure A goods, you must go to Hualin International ABCD Hall and not buy them from small vendors outside.
There is the possibility of fake products in Hualin International jade. The specific reasons are as follows: Mixed markets: The jade market has always had the problem of difficult to distinguish between authenticity and authenticity. Hualin International Jade Market, as an important place for jade trading, also faces this challenge. Illegal merchant behavior: Due to the high value of jade, some illegal merchants may take advantage of this and resort to fraudulent means, such as replacing it with inferior or selling manually processed jade, to seek illegitimate interests.
There is the possibility of counterfeit goods in Hualin International Jade Market. The jade market has always had authenticity problems, and Hualin International Jade Market is no exception. Although Hualin International Jade Market has a certain reputation and status in the industry, this does not guarantee that all jadeites are authentic. Due to the high value of jadeite, some illegal merchants may resort to fraudulent means to substitute inferior jadeite or sell manually processed jadeite.
