Evaluation of Jadeite Craftsmanship——Evaluation of Plain Surface

Exquisite craftsmanship can highlight the beauty of jade raw materials and give jade higher value. Here the evaluation can be divided into plain and carved pieces.

Evaluation of plain surface: The evaluation of jadeite plain surface includes appearance outline, proportion, symmetry, size and polishing.

1. The contour shape requires a smooth and flowing arc surface.

2. Proportion, just like a person’s body must have a fixed proportion. The cutting proportions are mainly determined by what looks good. After all, jade raw materials are precious and it is difficult to achieve perfect proportions. (Except for low-grade jadeite)

3. Symmetry, that is, the ring faces must be symmetrical up and down, left and right, and not skewed. The curvature of the ring faces made in Myanmar in the early days were all skewed, in order to save jade materials, which lost their beauty.

4. Size: This is the main factor in evaluating the value of jadeite, including weight, volume and thickness. The larger the volume, the higher the value, and the price does not increase in geometric progression. Size includes the weight and size (length, width, and thickness) of the jade. The price of making one Guanyin and two Guanyins from the same piece of material will certainly be different. An old pit glass-type egg-shaped jadeite is more than twice as expensive as a cabochon of the same quality that is twice as large. Saddle rings that are thin are easy to crack, and jade that is too thin will mostly be filled with glue, so the thickness ratio is also very important.

5. Polishing. The best visual effect is required to be "glowing" or "fluorescing". Generally, the better the texture, the better the gloss (glass type or ice type). With modern technology, polishing is not a problem and old materials can also be re-polished. The following comments can be applied to evaluate the outline, symmetry, proportion and polish. There are four levels of evaluation: excellent, very good, good and average. When evaluating bracelets, please refer to the above. Note that bracelets from the late Qing Dynasty and early Republic of China are not very round and will lose their historical value if re-polished. The most feared thing about bracelet cutting is unbalanced proportions, for example, a large diameter and small width, a small wrist circumference but a wide surface. The inner diameter of the round jade bracelet is 54~56mm and the width is 9~14mm. The inner diameter of the flat jade bracelet is 52-60mm and the width is 9-20mm. The inner diameter of the goose egg jade bracelet is 40-45 or 52-56mm, and the width is 8-10mm.

Okay! That’s all for this issue! Thank you for watching and paying attention!

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