Hey sisters! 👋 I'm your old friend, jadeite collector Xiao Wang. Today, let's talk about a topic that gives countless jadeite enthusiasts a headache—the authentication of jadeite pendants! 💎 Every time I see messages in the background asking, 'Teacher Xiao Wang, is this piece A-grade?' I know it's time to give you this 'hardcore appraisal lesson'! 💪

To be honest, the jadeite market is very deep, with various B-grade, C-grade, and even D-grade goods constantly emerging. It's easy to step on a landmine if you're not careful. When I first started, I also paid a lot of 'tuition fees'! 💸 I remember once, I spent several thousand yuan on an 'ice-grade floating flower' pendant. At the time, I thought it was incredibly beautiful, but when I took it to a professional institution for testing, they directly declared it a 'B+C grade'! 💔 The heartache was simply indescribable. So, today's sharing is to help everyone avoid detours and use our own 'fiery eyes' to see through those fakes!

🔍 Core Knowledge Points: Do You Really Understand Jadeite A-Grade, B-Grade, C-Grade, and D-Grade?

Before authentication, we must first clarify a few basic concepts:

  • A-Grade Jadeite (Natural Jadeite): This is the highest realm we pursue! 🤩 It refers to jadeite that has not undergone any chemical treatment, where the color, structure, and transparency are all naturally formed. It only undergoes mechanical processing, such as cutting, grinding, and polishing, retaining the most original physical and chemical properties of jadeite. A-grade jadeite has the highest value and is the most worth collecting. Its internal structure is dense, its luster is warm, it feels cool to the touch, and it makes a crisp sound when tapped.


  • B-Grade Jadeite (Bleached and Filled Jadeite): This type of jadeite is treated with strong acid to remove internal impurities, and then filled with epoxy resin and other organic glues to fill cracks and pores. Its appearance may look beautiful, and its transparency may also be improved, but its internal structure has been damaged and becomes loose. B-grade jadeite has a very short lifespan and will 'yellow' or 'dull' over time, and even 'glue cracks' may appear. The tapping sound will become dull.


  • C-Grade Jadeite (Dyed Jadeite): As the name suggests, C-grade jadeite is artificially dyed jadeite. It may be dyed on the basis of A-grade or B-grade to enhance or change the color. The color of dyed jadeite is often too bright and unnatural, and the color will be distributed along the cracks. Under magnification, you can see the aggregation of colorants. If you wipe it with a cotton swab dipped in alcohol, sometimes the color will come off.


  • B+C Grade Jadeite: This is a combination of B-grade and C-grade, which has been both acid-washed and filled, and dyed. This type of jadeite has the worst quality and is the most deceptive.


  • D-Grade Jadeite (Fake Jadeite): D-grade is even more direct; it's not jadeite at all, but rather other jade stones (such as Malaysian jade, aventurine, Xiuyan jade, etc.) or glass, plastic, etc., masquerading as jadeite. This type of authentication is relatively easy, but novices can also be fooled.


✨ Practical Authentication Tips, Even Novices Can Become Experts!

Having mastered the theoretical knowledge, the next step is practical application! I have summarized several super practical authentication methods for everyone. Take notes! 📝

  • Look at the Luster ('Fly Wings' and 'Orange Peel Texture'):

* A-Grade: The surface luster is glassy, very bright, and when rotated under strong light, you will see the unique 'fly wings' structure (cleavage plane reflection) inside the jadeite, as well as irregular 'orange peel texture' (tiny convexities and concavities formed by the interweaving structure of jadeite crystals on the polished surface) on the polished surface. This is an important sign of A-grade! In my personal experience, a good A-grade jadeite has a warm luster that radiates from within, rather than a superficial, flashy shine.
* B-Grade: Due to resin filling, the surface luster will appear dull or waxy, lacking the vibrancy of glassy luster, and you won't see 'fly wings' or 'orange peel texture'.

  • Feel the Touch (Coolness and Stickiness):

* A-Grade: Jadeite is hard jade, with high density and good thermal conductivity. Therefore, when you place A-grade jadeite against your cheek or the back of your hand, you will feel a distinct coolness, and this coolness will last for a period of time. The hand feel is very smooth.
* B-Grade: Due to the poor thermal conductivity of resin, the coolness of B-grade jadeite is not obvious, and it may even feel a bit 'sticky', not as smooth as A-grade.

  • Listen to the Sound (Crisp and Dull):

* A-Grade: Gently tap two pieces of A-grade jadeite together, and they will emit a crisp and pleasant 'steel sound', like wind chimes. This is because of its dense internal structure.
* B-Grade: Due to the damaged internal structure and resin filling, the tapping sound will become dull, hoarse, and lack penetration.

  • Look at the Color (Natural and Gaudy):

* A-Grade: The color is natural, with a color root, and the color distribution varies in depth, transitioning naturally. The color will also have subtle differences with changes in light and angle. There's a saying, 'color follows green,' meaning green often distributes along the texture of the jadeite.
* C-Grade: The color is often too bright, uniform, and unnatural, with no color root. Upon closer inspection, the color will be distributed along cracks or crystal gaps, and you can even see the aggregation of colorants. This phenomenon will be more obvious with a magnifying glass.

  • UV Fluorescent Lamp Irradiation (The Most Direct B-Grade Authentication Method):

* A-Grade: Under a long-wave UV fluorescent lamp, A-grade jadeite usually does not fluoresce or exhibits weak inert fluorescence.
* B-Grade: Since the filled epoxy resin will fluoresce, under a UV fluorescent lamp, B-grade jadeite will emit obvious blue or yellow-green fluorescence, which is very eye-catching. This is one of the most direct and effective methods for identifying B-grade jadeite! I always use this little tool for authentication, and it works every time!

💡 Teacher Xiao Wang's Warm Tips:

* Purchase Channel is Key: Try to choose reputable merchants, brand stores, or professional markets, and ask for an appraisal certificate issued by an authoritative institution. The certificate will clearly state 'Natural Jadeite A-Grade'.
* Observe More, Learn More, Compare More: Go to physical stores more often to see real A-grade jadeite, feel its luster, touch, and color, and develop your 'eye for it'.
* Don't Be Greedy for Small Bargains: Remember, you get what you pay for! If the price is unbelievably low, there's probably something wrong. Real A-grade jadeite, especially high-quality pieces, will not be cheap.
* Professional Institutions are the Last Line of Defense: When you are really unsure, spending a few tens of yuan to send it to a professional jewelry and jade appraisal institution for testing is the safest method. Certificates from national or provincial appraisal institutions are the most guaranteed.

💖 Conclusion

Jadeite authentication is a science that requires time and experience. But as long as we master the core knowledge and practical skills, coupled with a cautious heart, we can greatly reduce the risk of buying fakes. I hope today's sharing can help everyone, making our jadeite journey smoother and allowing us to find our beloved treasures!

If you have any other questions about jadeite, feel free to leave a comment or send me a private message! See you next time! 👋

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