Hey sisters! 👋 I'm your old friend, who has been in the jadeite industry for over a decade, having seen countless pieces. Today, I want to talk about a classic but crucial topic—jadeite identification! 🔍 Many sisters have messaged me asking how to avoid pitfalls and buy genuine jadeite. Actually, identifying jadeite isn't as mysterious as you might think. By mastering some professional methods, you too can develop a 'keen eye'! 😎

💎 The Core Secret of Jadeite Identification: The Truth About A, B, and C Goods

First, let's clarify a concept: A, B, and C goods of jadeite. These are not quality grades, but rather distinctions in treatment methods, which directly determine the value and collection significance of jadeite!

* Type A Jadeite (Natural Jadeite): This is the highest state we pursue! 💯 Refers to jadeite that has not undergone any artificial chemical treatment, and its color, structure, and transparency are naturally formed. It only undergoes mechanical processing such as cutting, grinding, and polishing. Type A jadeite has a dense internal structure, warm luster, and possesses collection and inheritance value.

* Type B Jadeite (Resin-Injected Jadeite): This type of jadeite is treated with strong acid immersion to remove internal impurities, and then injected with organic resins like epoxy resin for filling and consolidation. Its surface luster will become oily, but the internal structure is damaged, and over time it will 'mutate,' losing luster or even turning yellow. I've seen many sisters buy Type B goods and regret it years later. 💔

* Type C Jadeite (Dyed Jadeite): As the name suggests, Type C jadeite is artificially dyed. Usually, jadeite with poor base or color is dyed to achieve vibrant colors. The color of Type C jadeite often appears superficial, unnatural, and will fade over time. Wiping it with alcohol might even remove the color! 😱

* Type B+C Jadeite (Optimized and Treated Jadeite): Combines the treatment methods of both Type B and Type C, meaning it's both resin-injected and dyed. This type of jadeite has the lowest value and virtually no collection significance.

🔬 Professional Appraisers' 'Secret Weapons': More Than Just Eyesight!

As professional appraisers, we certainly don't rely solely on our naked eyes. Here are some professional identification methods we commonly use, which beginners can also refer to to understand the science behind them:

  • Fourier Transform Infrared Spectroscopy (FTIR): This is one of the most effective methods for identifying Type B jadeite! The instrument emits infrared light to penetrate the jadeite and analyze its molecular vibrational absorption spectrum. If characteristic absorption peaks of organic resins, such as 2920cm⁻¹ and 2850cm⁻¹, are detected, it can almost certainly be concluded as Type B. This method is highly accurate and is the 'gold standard' for laboratory identification.


  • Raman Spectroscopy: Primarily used to identify the mineral composition of jadeite. The main mineral of jadeite is jadeite, and Raman spectroscopy can clearly show the characteristic peaks of jadeite. At the same time, it can assist in detecting the presence of dyes.


  • UV Fluorescence Detection: Under ultraviolet light, natural Type A jadeite usually shows no or only weak fluorescence. However, Type B jadeite, due to the filling of organic resins, often emits a distinct blue-white or yellow-green fluorescence under long-wave UV light. Short-wave UV light may show different reactions. This is a very intuitive auxiliary identification method.


  • Density and Refractive Index Measurement: The density of jadeite is approximately 3.33g/cm³, and its refractive index is approximately 1.66. These physical constants are important indicators for identifying jadeite. Through professional densimeters and refractometers, precise measurements can be taken to exclude some imitations, such as water-mottled jade (density ~2.57g/cm³) or quartzite (density ~2.65g/cm³).


💡 Practical Advice for Beginners: How to Avoid Pitfalls?

Although ordinary consumers don't have professional instruments, mastering some basic knowledge and techniques can significantly reduce the risk of falling into traps:

* Observe the Luster: Type A jadeite exhibits a vitreous luster, clear and sharp. Type B jadeite, due to resin injection, will appear somewhat 'oily' or 'waxy' in luster.
* Examine the Structure: Under a magnifying glass, Type A jadeite's internal structure is fibrous intergrowth or granular, with visible mineral crystals. Type B jadeite's structure will appear loose, blurry, and may even show acid-etched mesh patterns.
* Check the Color: The color of Type A jadeite is natural, with a 'color root,' and the color transition is natural. The color of Type C jadeite often appears superficial, without a 'color root,' and is overly vibrant and unnatural.
* Listen to the Sound: Gently tap two pieces of Type A jadeite together, and they will produce a crisp, pleasant 'steel sound.' Type B jadeite, however, will emit a dull 'plastic sound.' (⚠️ This method requires caution, as improper force may damage the jadeite)
* Request a Certificate: When purchasing high-value jadeite, always request an appraisal certificate issued by a national authoritative institution. The certificate will clearly state 'Natural Jadeite' or 'Jadeite (Treated).' This is the most direct and reliable guarantee! I personally recommend looking for certificates from institutions like NGTC (National Gemstone Testing Center), GIC (Gemological Institute of China), and GUC (China University of Geosciences), which are recognized as authoritative in the industry.

💖 My Sincere Words

The charm of jadeite lies in its naturalness and spirituality; every piece of Type A jadeite is a gift from nature. I hope my sharing can help everyone avoid detours on their journey of purchasing jadeite and acquire truly beloved treasures! Remember, observe more, learn more, and ask more questions – improving your appreciation skills is key! 💪 If you have any questions, feel free to leave a comment in the comment section, and I'll reply as soon as I see them! See you next time for more jadeite knowledge! Love you all! 😘

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