Hey sisters! 👋 I'm your old friend, a seasoned player who's been obsessed with Hetian jade for over a decade. Today, let's not talk about anything else, but rather delve into the 'face of the family' in Hetian jade – Bi Yu! 💚

Speaking of Bi Yu, many newcomers might think it's all 'green and oily,' seemingly similar. But experienced players know that Bi Yu is a deep subject! From Russian Bi Yu, spinach green, to duck-egg green, and now the highly sought-after 'old pit material,' each has its unique charm and value. However, this also brings various phenomena of counterfeiting and shoddy goods in the market, causing many novice sisters to fall into traps. Don't worry, today I'm going to selflessly share the 'dry goods' of Bi Yu identification that I've summarized over the years of trial and error. I guarantee that after this lesson, you'll also develop a pair of discerning eyes! 👀

💎 Core Three Elements of Bi Yu Identification: Structure, Color, Black Spots

1. Structure: The Finer the Jade, the Better!

The structure of Bi Yu, also known as 'jade quality' or 'meat quality,' is one of the most crucial indicators for judging the quality of Bi Yu. Good Bi Yu will have a very fine structure, almost invisible fibrous interweaving under a strong flashlight (in the trade, this is called 'no structure under light' or 'no structure through light').

* High-quality Bi Yu: For example, top-grade Russian Bi Yu material, its structure can reach a 'lipidized' state, appearing warm and greasy to the naked eye, with a smooth and waxy feel. I once saw a top-grade spinach green bracelet where almost no structure was visible under light. The light seemed to melt into the jade, and that oily luster was simply amazing! ✨
* Medium-quality Bi Yu: May show subtle fibrous interweaving structures, but the overall appearance is still uniform and dense.
* Low-quality Bi Yu or fakes: The structure will appear rough, with a strong granular feel, and even visible crystal particles. Some materials may also have 'water lines' or 'radish patterns,' which are signs of poor jade quality.

Tip: When identifying the structure, it's best to observe it under a strong flashlight. Hold the flashlight close to the jade surface and observe its internal structure by transmitting light from different angles. The finer and more uniform, the better.

2. Color: Depth and Uniformity of Green are Key!

The color of Bi Yu is its most intuitive charm. However, greener is not always better; the key lies in being 'correct' and 'uniform.'

* Spinach Green: This is the most classic color of Bi Yu, rich and deep like spinach leaves, with a slightly dark green hue. This color is often accompanied by excellent jade quality and oiliness. Personally, I love spinach green the most; that steady yet understated green truly becomes more appealing the more you look at it.
* Duck-egg Green: The color leans towards grayish-green, usually with very fine jade quality and full oiliness, giving a warm and gentle feeling. The value of duck-egg green has also risen in recent years because of its unique elegant temperament, which is highly favored by the antique collecting community.
* Apple Green/Bright Green: The color is bright and vivid, but it's important to note that this color often appears in new pit materials, where the jade quality is relatively loose and the oiliness is insufficient. If you encounter a 'apple green' that is particularly vibrant but not expensive, be extra cautious and beware of dyed or glass imitations.
* Color Uniformity: Good Bi Yu has a uniform color distribution without obvious color differences or spots. If the color appears 'patchy' or has significant variations in depth, it will greatly affect its aesthetics and value.

Personal Experience Sharing: When choosing Bi Yu, in addition to looking at the color, I pay special attention to its 'liveliness.' A good Bi Yu, even a deep spinach green, will exude a sense of vitality rather than being dull. This requires a lot of looking and handling to gradually cultivate your 'jade sense.'

3. Black Spots: Bi Yu's 'Birthmarks' and Value!

Bi Yu generally contains black spots, which are mineral impurities such as chromite within it. It can be said that 'no black spots, no Bi Yu.' However, the number, size, and distribution of black spots will all affect the value of Bi Yu.

* High-quality Bi Yu: Very few black spots, or the black spots are very tiny and do not affect the overall aesthetics. Some top-grade materials can even achieve almost no black spots, which makes their value extremely high!
* Medium-quality Bi Yu: Has a small number of fine black spots, but they are not dense or concentrated in conspicuous positions.
* Low-quality Bi Yu: Black spots are numerous and large, even forming 'black patches' or 'black clumps,' severely affecting the aesthetics.

Important Tip: If a piece of Bi Yu claims to be 'perfectly free of black spots,' you need to be extra careful! This is either an extremely rare top-grade item (which would be very expensive) or a fake, such as green glass, quartzite, or Malaysian jade. These fakes usually do not have natural black spots.

💡 Anti-Pitfall Tips: Remember These Points to Save Yourself Trouble!

  • Look at the luster: Natural Bi Yu has an oily or waxy luster, warm and understated. Glass imitations usually have a bright, 'glassy' luster. Feel it with your hand; natural Bi Yu will have a unique 'waxy' and 'oily' feel.

  • Listen to the sound: Gently tap it; natural Bi Yu will emit a crisp and pleasant sound, while glass or plastic imitations will sound dull.

  • Test the hardness: Bi Yu has a hardness of 6-6.5. Gently scratch an inconspicuous area with a small knife or steel needle; natural Bi Yu will not leave a scratch (not recommended for beginners, as it can damage the jade).

  • Seek professional appraisal: If you are unsure, or if you are purchasing high-value Bi Yu, be sure to obtain a certificate from an authoritative jewelry and jade appraisal institution. This is the safest method! Every time I acquire a significant piece, I ask the seller for a certificate or send it for inspection myself.


In summary:

Identifying Bi Yu is like appreciating a good cup of tea; it requires careful feeling and accumulated experience. Remember the three major principles of 'fine structure, correct and uniform color, and appropriate black spots.' Look at more genuine articles and handle them more often, and your identification skills will improve by leaps and bounds! I hope today's sharing can help all my sisters. Let's become more professional and happier on our journey of playing with jade! 💖

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