Some of Shoushan stone carving artists in Fuzhou, especially the so-called masters, have known that they have been exposed to Shoushan Stone for decades and have accumulated rich experience. It is possible to identify 100% of the Shoushan Stone of origin. Some collectors believe that masters are also a sign of "integrity". There are two added value of Shoushan stone carvings signed by these masters: one is "master works" and the other is material "fidelity." But carving stones, taking time, consuming energy, collecting money slowly, participating in the identification of stones, time is fast (several minutes), collecting more money (hundreds or thousands of dollars or even tens of thousands). Therefore, the industry has such calligraphy: master works, apprentice production.
In fact, it is very easy for a professional inspection agency to identify Shoushan Stone. They do not rely on the feeling (visual inspection) to identify Shoushan Stone, but according to the national standard of "Jewelry and Jade Identification", according to the mineral rock of Shoushan Stone itself. Characterization, because the characteristics are unique, so the results of the identification, no matter which one is re-examined by the appraiser, or sent to other appraisers in the country to review, the results are the same. The charges are also very low, and each piece is also tens of dollars.
The result of the above-mentioned Shoushan Stone, which was identified by the master's feelings (visual inspection), is different because of different masters. Therefore, it will appear. Today, this master is said to be the chicken nest of Shoushan Stone. Tomorrow, the master said that it is a hen nest, and the stone merchant sells it. Going back to the province and sending it for inspection may not be the mother's nest. In particular, Tian Huangshi, the signature of the master Tian Huangshi, sent to the professional inspection agency for identification, may not be Tian Huangshi.
A number of authoritative tests to identify the "real identity" of jewelry
In fact, the experimental testing of professional jewellery and jade inspection agencies is quite rigorous, and there are many testing items. First, the inspector will magnify the sample and place it under a magnifying glass and microscope to see the internal morphology of the sample.
“This process is very important.†The inspectors said that the jewels and jade of different materials have different internal structures. For example, both jade and hetian jade are interwoven, but the way they are interwoven is different.
The internal inclusion characteristics of different gemstones are also different. Some inclusions are fingerprint-like, and some inclusions exhibit mineral properties.
After that, the inspector also checks the refractive index, density, and absorption spectrum of the sample. Different materials of jewellery and jade, the test results of these items will be different.
The tester also placed the sample in an infrared spectrometer for testing. “This is the reflection property of the test sample.†The tester said that this project can further determine the properties of the sample and characterize the sample.
Natural jade and treated jade can be distinguished in the detection of this project. “If the jade is treated, there will be organic matter and the reflectivity will change.â€
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