For a long time, jadeite has always been the hardest hit area for jewellery fraud. After wearing a tens of thousands of yuan of jade bracelets, it is found that there are not many cases of quartz dyeing or even plastic processing.
Imitation, laminating, re-creating, filling, dyeing... These should not appear in the natural jade processing process, but have already penetrated into the relevant steps of making "Jade".
“Jadeite is not like gold, silver and diamond products. This is not a standardized product. There are no two jadeites in the world.†said Yu Zhiwei, the chief gemologist of the Chinese colored gemstone network and the Royal Jewelry Appraiser.
a fake jade production line
The price of jade market shows that the price of new turquoise has reached 200 yuan per gram last year, compared with 80~100 yuan per gram in previous years, the increase rate reached 130%. Since 2000, the price of a series of jade including traditional Hetian jade and jade has continued to rise. In the past ten years, the price has increased by several times or even hundreds of times. "In addition to market promotion and scarcity of resources, industry speculation and the influx of large amounts of funds are also the main factors for the increase in jade prices." Yu Zhiwei also said, "This also allows many jade companies and individuals to see the business opportunities." '."
Antiques and counterfeiting are the two most important "mixed fake" profit-making methods in the jade market.
Last year, the "220 million yuan of antique price jade stool" made a small town in Jiangsu Province that was not eye-catching, "fire". Wang Rumian, president of the Zhangzhou Gemstone Industry Association, made it clear that this “Han Dynasty jade stool†auctioned in Beijing for 220 million yuan came from Chenzhou City, and several young men from Xiangyang Village were busy for more than a year, 2010 As a high imitation craft, he sold it to a foreigner for 2.3 million yuan. "I don't know what happened, and today I have become a valuable cultural relic for auction." Wang Rumian once said.
In fact, Zhangzhou has already become one of the important bases for domestic jade processing, with more than 50,000 local workers engaged in jade processing. In addition to the high-end jade that targets antiques, the low-end products based on jadeite account for almost three-quarters of the total production.
"Traditional methods of counterfeiting can be roughly divided into three types, shoddy, fake, and synthetic jade products." Yu Zhiwei said that the theory of artificial synthesis is only theoretically feasible.
The company has announced the synthesis of artificial jade, but in view of the artificial base and cost is too high, it has never appeared in the market. As for the former two, the use of physical or chemical means to transform other natural ore into jade, or the poor quality of jade as a high-end product, is more common in the industry.
According to Yu Zhiwei, in the jade professional mouth, traditional jade can be divided into A goods, B goods, C goods, B + C goods, D goods and other different levels.
B goods refers to the jade stone with poor quality and good quality soaked in strong acid, until the internal variegated yellow, gray, brown and other basic fading off, showing a clear white background, then soaking the acid with a weak acid salt solution In liquid
And, wash and dry with water. Although the overall structure of the jadeite after soaking has not changed, the fine structure has been destroyed, and a loose wire mesh and a hollow structure appear. In order to restore the strength of the jade, it is usually filled and solidified with an oxygen resin having a strong adhesive force, instead of the removed material, to fill the void and exhibit a crystal clear and translucent effect.
The jadeite selected for C goods generally has a certain porosity, non-dense jade as the foundation, and then directly put into the fuel or pigment for long-term soaking, while heating, so that the fuel is immersed in the jade void. After successful dyeing, a layer of wax grease will be immersed to make the color distribution look softer.
At the same time, the jadeite which has been subjected to strong acid corrosion, bleaching, potting and artificial dyeing is called B+C goods. Its color is bright, and from the appearance, both the color and the water head are very attractive. This type of product is also the most common type of counterfeit goods.
As for the D goods, most of the jade, stone or synthetic glass is posing as emerald. Basan jade, Nanyang jade, Dongling stone, and ink ink are all common types of jade used to make jade. The surface of these jade is covered with a layer of face, the cost price is almost only a few tenths of jade, usually around ten or twenty yuan.
Although B goods and C goods are also made of real jade, but the real value of the collection of A goods is really "authentic". As for the collection, it is only a few treasures.
10 yuan a true and false identification book
Recently, I visited several shops selling jade in Shanghai. When asked about the true and false issues, most of the shop owners vowed to say that they were absolutely authentic, and even one shop owner took out a corresponding jade bracelet appraisal book. The certificate clearly states the weight, size, color, refractive index and internal features of the bracelet, along with a product photo.
Subsequently, a search on Taobao found that such identification certificates are as low as ten yuan, and many dozens of yuan can be seen everywhere. Among them, there is no shortage of “Beidu Gem Identification Center†that issued the certificate of “National Certificationâ€.
In a communication with one of the shopkeepers, a similar certificate the store can sell tens of thousands of copies a month, most of which are customized for jewellery and jade dealers, and discounts for large quantities of orders.
Yu Zhiwei said that for ordinary consumers, the identification certificate can not represent 100% guarantee. Nowadays, more and more “imposing institutions†are involved in confusing consumers' judgments.
However, in answering the question of how to distinguish between true and false when purchasing jade and jade, Yu Zhiwei believes that it is difficult to make a unified judgment in the actual situation. "In a non-professional identity, relying solely on some
Theoretical knowledge, magnifying glass, flashlight or naked eye to identify jadeite is difficult to be accurate. Even professionals with rich experience in jade identification and appraisal related knowledge often need to use professional instruments to judge. It is almost impossible to rely on "small tricks" to resist fakes.
“Buyers are conceitedâ€, this is an unwritten rule in the jewelry retail industry. At present, there is no way to evade all fraud or adulteration. Do not easily believe that “the pie that fell from the sky†is the most for all consumers. Good advice.
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