The most comprehensive and practical method to identify genuine jadeite

Who said the supply of jade is going to disappear? There are so many sources of jadeite both online and in physical stores! How can you not be tempted by such a beautiful thing? But no matter whether it is expensive or cheap, the right thing to do is to buy the real thing. The jadeite on the market now is divided into A-grade (pure natural, non-corrosive, injected with glue, and undyed), B-grade (corroded + injected with glue), C-grade (dyed) or B+C-grade. So how do you identify A-grade jadeite? Below, the editor will introduce to you some practical methods to identify A-grade products.

1. Look at the gloss.

A-grade jade has a dense structure and a strong glassy luster on the surface. The luster of B-grade products is dull due to glue injection, and they usually look like wax or resin. The left picture below is A, and the right picture is B.

Second, look at the surface.

To look at B-grade jadeite, you need to turn the jadeite while looking at the light and find an angle where you can clearly see the reflection from the surface of the jadeite. If you look closely, you can see that the surface of the B-grade jadeite has many pits and pockmarks, which are formed when the silicone on the surface is weathered, abraded and peeled off.

3. Look at the color root.

The color of A-grade goods becomes lighter from the inside to the outside, while the color of C-grade goods becomes lighter from the outside to the inside.

Color root refers to a point or a thin strip of slightly darker green in jade jewelry. The slightly darker green gradually transitions into a relatively lighter green.

The color of A-grade jade, such as green, is distributed like tree roots or flakes, with clear and distinct outlines; the color roots of B-grade jade are fuzzy, and the color and the base are blurred like in Chinese paintings, with spots, black dots or floating blocks (most of the time this green is shown on a grayish white or bean green ground); because C-grade jade is dyed, the color on the surface is darker than the inside, and the color roots are not obvious.

4. Use tools

Look at the cross section.

A-grade jade has natural growth lines on the cross-section, while B-grade jade does not.

5. Expose under white light.

B-grade products have a relatively clean base color, without impurities or grayish-yellow color. Since B-grade jade has undergone acid washing and bleaching, the oxides and other fusible impurities contained in the jade are dissolved, the yellow and dirty bases are removed, but the light green, blue water color and mauve base colors will still exist.

Therefore, the white part of the jade will be particularly white, without any impurities or gray-yellow components.

6. Use ultraviolet light.

The B-grade products filled with glue fluoresce under ultraviolet light.

7. Look through a magnifying glass.

This method is for B-grade products that have been polished twice. It needs to be viewed with a 10x magnifying glass. The surface of A-grade jade is smooth and delicate, and you can see that different mineral particles have slight bumps and grain junction lines on the surface due to the difference in hardness. ; The surface of B goods has orange peel-like structure or even cracks.

8. Check the certificate

"CMA" "CML" "CNAL" mark on the certificate

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