Turquoise is known as the least abundant of the four famous jade in China.
The price difference with the international jewelry market is nearly 10 times. Therefore, turquoise should have a great appreciation in China.
Naturally produced turquoise is extremely depleted during processing. The raw material without any treatment can only be processed to a yield of 15%-20%, which can be called A cargo.
If the yield after perfusion treatment can usually reach 50%-60%, up to 70%-80%, it can be called B goods. There are generally two kinds of perfusion methods: “dip†treatment at normal temperature and atmospheric pressure, and “injection†treatment under normal temperature and high pressure, or collectively, can be processed before gem processing to improve the yield ( Quality).
It is also dyed to increase the color (value), which can be called C goods. It is also possible to carry out two processes at the same time, which can be called B+C goods.
The process is not covered here. This treatment method has been generally accepted abroad and is not recognized in China. The identification can be distinguished by the "water immersion method" introduced in "Authenticity and Authenticity", which is simple and quick.
In China, there is an ancient, traditionally accepted traditional jade optimization method called “wax waxâ€, “wax wax†or “waxâ€, which is applied in all jade processing technologies. If necessary, please add WeChat miaoyong194, more knowledge plus magic use Hall WeChat public number miaoyong810
The method is to polish a jade stone after it has been processed into a finished product. The purpose is to retain water, fix the color, and make the gemstone not suitable for being soiled.
Should still be a cargo.
When using the "water immersion method" to identify, the gems need to be soaked in water for a while (about 1-2 minutes), and there will also be water discoloration.
At present, the turquoise products in the market are mostly B, C and B+C products that have been infused. In the domestic jewellery and jade market, the turquoise A, B, C goods are mixed, and the price crosses. There is no obvious distinction between the jewelry grade and the jewelry grade. It is difficult for consumers to judge the quality by price. The market price of finished products (excluding additional process and brand value) ranges from 15 to 80 yuan per gram.
In the case of A goods and B goods, the price difference caused by the yield rate should be between 3 and 4 times. There is no obvious price difference between B goods and C goods. The gem-quality turquoise products in the market are “rareâ€, and most merchants will not have A goods “porcelain pineâ€.
Generally, it will not be sold according to gram weight, and the value of a single piece is more than one thousand yuan.
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