Industry Observation:
In recent years, with the booming jade market, counterfeit products have emerged endlessly, posing significant challenges to consumers and industry integrity. Traditional jade identification methods, such as visual inspection and refractive index measurement, often fall short when dealing with high-quality fakes. However, the latest technological advancements are bringing a glimmer of hope to this dilemma.
Recently, a research outcome jointly released by the School of Gemology, China University of Geosciences (Wuhan) and the National Gemstone Testing Center (NGTC) indicates a breakthrough in hyperspectral imaging (HSI) technology for jade identification. This technology collects continuous spectral information of jade in the ultraviolet, visible, and near-infrared bands, combined with big data analysis and artificial intelligence algorithms, enabling non-destructive, rapid, and high-precision discrimination of jade's origin, variety, optimization treatment methods, and even authenticity.
According to Professor Zhang Li, the project leader and a professor at the School of Gemology, China University of Geosciences (Wuhan): "The hyperspectral imaging system we developed has achieved an accuracy rate of over 95% in identifying the authenticity of mainstream jade varieties such as Hetian jade, jadeite, and Xiuyan jade. It demonstrates unprecedented advantages in distinguishing between B-grade jadeite and natural jadeite, as well as identifying dyed Hetian jade." Professor Zhang further revealed that in preliminary laboratory tests, the system could complete scanning and provide identification results for a batch of B-grade jadeite samples treated with acid washing and resin impregnation in just 5 seconds, with an accuracy rate as high as 98.7%. In contrast, traditional Fourier Transform Infrared (FTIR) spectroscopy takes several minutes and requires more experience from operators.
Dr. Li Ming, a senior engineer at the National Gemstone Testing Center, added: "Hyperspectral imaging technology can not only identify traces of jade optimization treatments, such as resin filling and dyeing, but also provide strong data support for tracing the origin of jade by analyzing mineral composition and trace element characteristics. Currently, we have established a hyperspectral database containing over 10,000 samples, covering representative samples from major jade producing areas such as Myanmar, Russia, and Canada."
The widespread application of this technology is expected to have a profound impact on the entire jade industry chain. For consumers, the identification process will be more transparent and reliable, greatly reducing purchase risks; for businesses, it can enhance credibility, combat counterfeiting, and purify the market environment; for appraisal institutions, it can improve work efficiency and identification accuracy, and reduce labor costs.
Although hyperspectral imaging technology has broad prospects, its initial equipment cost is relatively high, and it requires professional technicians for operation and maintenance. Professor Zhang Li stated: "We are collaborating with several instrument manufacturers to reduce equipment costs and develop more user-friendly intelligent identification systems, enabling their wider application in the jewelry and jade market. It is expected that within the next 3-5 years, hyperspectral imaging technology is likely to become one of the standard configurations in the jade identification industry."
This technological breakthrough undoubtedly injects a shot in the arm for the jade industry in China and globally, heralding a more just and transparent jade market.