How to identify the authenticity of jadeite? The Complete Guide to Jade Identification

1. What is B-grade jadeite? What is the difference between B-grade jade and natural jade?

The so-called B-grade jade is jade that is soaked in concentrated acid and bleached and then filled with glue using high-pressure method in order to remove dirty spots on jade. After processing, this type of jade will be whiter and brighter than before, and its transparency will also increase accordingly. However, the interior of the jade is damaged after processing, resulting in reduced durability. Generally, cracks will appear on the surface of the jade or the color will turn yellow in one to two years.

The biggest difference between B-grade jade and natural jade is that after being artificially corroded with strong acid and filled with glue, small irregular grid-like cracks will appear on the surface of the jade under reflective conditions. The cracks are interconnected and intertwined, which are called "acid etching patterns" in the industry. While the surface of natural jade has overly smooth bumps and depressions under reflective conditions, which are called "orange peel patterns" in the industry.

2. What is C-grade jadeite? What is the difference between C-grade jade and natural jade?

The so-called C-grade jade is commonly known as dyed jade. The dye is infiltrated into the mineral crystals of jade along the cracks of jade, thereby changing the original color of jade and making its color achieve an effect that was not originally achieved.

The biggest difference between C-grade jadeite and natural jadeite is that: at the first glance, observing C-grade jadeite can give people a very intuitive feeling that its color is exaggerated and unnatural; when observing with a magnifying glass under ordinary light, the color of C-grade jadeite is not attached to the inside of the crystal, but to the surface of the crystal, or accumulated and attached to the cracks of jadeite, with no color roots; the color of C-grade jadeite is rich, but the lighter and paler it becomes as you go inward; in the rough parts of the cracks, the color obviously deepens or lightens.

3. What is D-grade jadeite? What is the difference between common D-grade jade and natural jade?

The so-called D-grade jade is actually not jade at all, but some cheap jade, glass or even plastic that is used to imitate jade. Common D-grade materials on the market include Australian jade, jasper, Malayan jade, amazonite, Xiuyan jade and water jade.

a. The difference between jadeite and Australian jade (green chalcedony): Although the color of Australian jade (green chalcedony) is green and brighter, the green color is not solid. The green color is evenly distributed, giving it a floating feeling, and a tender feeling among the bright colors. When viewed through a magnifying glass, Australian jade (green chalcedony) does not have orange peel. Australian jade (green chalcedony) is lighter than jadeite.

b. The difference between jadeite and jasper: Jadeite appears bright under the light, while jasper looks dull and gray; the density of jadeite is greater than that of jasper, so of the two of the same size, jadeite is heavier; jadeite has a glassy luster, while jasper has an oily luster, and jadeite appears to have a stronger and brighter luster when observed with the naked eye.

c. The difference between jadeite and Malayan jade: Malayan jade has no color roots when light is transmitted through it, and the color is dull, bright and unnatural; Malayan jade is lighter than jadeite.

d. The difference between jadeite and amazonite: Amazonite is softer and metal can leave obvious scratches on its surface; the specific gravity of amazonite is relatively low at only 2.53-2.56, which is far from jadeite; the green color of amazonite generally has a blue tint; the transparency of amazonite is poor, and it is rare to have a transparency higher than that of jadeite's icy type.

e. The difference between jadeite and Xiuyan jade: Xiuyan jade has a lower density of 2.5-2.8; when observed under magnification, it is difficult to see the granular structure of Xiuyan jade, and it does not have the orange peel-like surface of jadeite; Xiuyan jade crystals are smaller, and flaky or fibrous directional growth structures can be seen at the fracture.

f. The difference between jadeite and water foam jade: Jadeite is much heavier than water foam jade. It is obviously heavy when weighed directly by hand. Jadeite is much brighter than water foam jade after polishing. Jadeite has a glassy luster and is very rigid, while the luster of water foam jade is relatively lacking in strength. Jadeite has visible green properties, color roots, and obvious color transitions, while water foam jade has no green properties, no color transition, and has more white stone brains or stone flowers. White cotton is common inside jadeite, while tiny white bubbles can be seen inside water foam jade, which are arranged in parallel strings of small bubbles. To the naked eye, they look like the crystalline texture formed when crystals crystallize. Only when you magnify them can you find that they are voids in the shape of small bubbles. Usually, the voids will be filled with impurities to form tiny floating flowers, and the shape is due to the small flowers filling the voids.

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