Greetings, fellow jade enthusiasts and Nanhong lovers! I am Huang Jianguo, and I have been immersed in the jade industry for over thirty years, with a particular fondness for Nanhong agate. Today, I want to discuss some of the "new normals" in Nanhong agate authentication and share my unique insights.

There was a time when Nanhong agate authentication largely relied on "eyesight" and "experience." Experienced old-timers, with years of hands-on practice, could discern the authenticity and quality of Nanhong at a glance. However, with the advancement of technology and increasingly sophisticated counterfeiting techniques, relying solely on experience is no longer sufficient. I often say that Nanhong authentication today is a progression from "empiricism" to "scientific verification."

Firstly, we must confront a reality: the level of high-quality counterfeit Nanhong on the market has reached an astonishing degree. In the past, we judged Nanhong by observing its classic colors like "persimmon red" and "cherry red," as well as its unique warm, gelatinous texture. But now, some optimized agates, and even synthetic materials, can visually approximate natural Nanhong indefinitely. For example, I recently encountered a case involving a so-called "Jiukou persimmon red" that had a rich color and fine texture, almost indistinguishable from the real thing at first glance. However, when I examined it closely with a magnifying glass, I noticed that the distribution of its cinnabar spots was too uniform, lacking the random, natural growth patterns characteristic of natural Nanhong. Further spectral analysis confirmed that it had undergone artificial dyeing and glue injection treatment. This case made me deeply realize that single-point experiential judgment can no longer cope with increasingly complex counterfeiting methods.

So, in this "new normal," how can we improve our Nanhong agate authentication skills?

I believe the core lies in combining traditional experience with modern scientific methods.

First, deepen our understanding of Nanhong agate's mineralogical characteristics. We must not only understand Nanhong's color and texture but also delve into its microscopic structure. Natural Nanhong agate has unique internal cinnabar spots (microcrystalline hematite). Under a microscope, these cinnabar spots appear as irregular clusters or dots, accompanying the agate's growth patterns. In contrast, in artificially dyed agate, the pigments are often infused into the cracks of the agate or exhibit an overly uniform distribution lacking depth. I recommend that everyone use high-magnification magnifying glasses, or even microscopes, to observe the microscopic structures of Nanhong from different origins and of varying qualities, to build their own "database."

Second, embrace modern testing technologies. Spectrometers, X-ray fluorescence spectrometers (XRF), and other equipment are no longer exclusive to laboratories. Some professional jewelry appraisal institutions, and even some large jade dealers, have begun to equip themselves with these devices. Spectrometers can analyze the chemical composition of Nanhong, thus determining whether it has undergone dyeing, glue injection, or other treatments. For example, the red color of natural Nanhong primarily comes from hematite, while dyed Nanhong may show components of artificial dyes. XRF can non-destructively analyze the elemental composition of Nanhong, playing an important auxiliary role in distinguishing Nanhong from different origins and identifying some new types of imitations. Of course, these devices are expensive and may be inaccessible to ordinary consumers. But as professional practitioners, we have a responsibility to understand and learn about these technologies so that we can seek help from professional institutions when necessary.

Third, pay attention to Nanhong agate's "associated minerals" and "geological characteristics." Due to different formation environments, Nanhong from different origins often has unique associated minerals or exhibits specific geological characteristics. For example, Liangshan Nanhong often has volcanic ash, black or gray inclusions; Baoshan Nanhong often has "fire-scarred patterns" or "ice crack patterns." While these features cannot be the sole basis for authentication, combined with other factors, they can provide strong corroboration for our judgment. I once encountered a piece of extremely high-quality "Jin Hong" Nanhong, with pure color and a strong gelatinous feel. But when I observed it closely, I found some tiny black pinpoint inclusions inside, which reminded me of the characteristics of Liangshan Nanhong. Further testing confirmed that it was indeed Liangshan Jiukou material.

Fourth, keep learning and communicating. The jade industry is constantly changing, and counterfeiting methods are endless. We must maintain a humble attitude towards learning, communicate more with peers, and share experiences and case studies. Attending professional jade exhibitions, seminars, and reading the latest industry reports are all effective ways to improve one's authentication skills.

Summary and Recommendations:

Nanhong agate authentication has evolved from relying on "experience" to today's "balancing experience with science." As a seasoned jade practitioner, I deeply understand the great responsibility. I recommend everyone to:

  • Cultivate a solid theoretical foundation: Deeply understand the mineralogical and geological knowledge of Nanhong agate.


  • Strengthen practical experience: Observe more, touch more, compare more, and accumulate practical experience with Nanhong of different qualities and origins.


  • Make good use of technological means: When conditions permit, actively utilize modern testing equipment to assist in authentication.


  • Stay vigilant: Be highly cautious about Nanhong on the market that appears overly perfect or is priced unusually low.


  • Continuous learning and communication: The world of jade is boundless, and learning is endless.


The charm of Nanhong agate lies in its unique color and warm texture, and even more so in its profound cultural heritage. I hope that through our collective efforts, more people can understand and appreciate Nanhong, and that the Nanhong market can become healthier and more transparent. Thank you all!