The difference between the injection and peeling of jadeite is just one word, but the value is very different.

Jadeite glueiness means that when light shines on jadeite, it looks like a piece of solidified glue. When it rotates under the light, it looks like a flowing colloid. It has a strong transparent structure and light perception.

In fact, not all natural A-grade jadeite can be glued. It must meet the following conditions:

1. It is of ice grade or above, old grade, and has very fine grains.

2. The internal crystal particles are not arranged in a directional manner.

3. The entire piece of jade is free of impurities.

Natural Jade

Glue injection is one of the most commonly used processing techniques for B-grade and C-grade jadeite. Jade that has been washed with strong acid has a loose structure, so the cracks will be filled with glue before further processing. With the improvement of craftsmanship, the polished glue-injected jadeite looks not much different from natural A-grade jadeite, which is quite confusing.

Glue-injected jadeite

Identification of Glue-Injected Jadeite:

color

The color distribution of B-grade jadeite has no sense of hierarchy. After soaking in acidic solution, the base turns white and the green color becomes more floating, which looks very unnatural.

Cement

Since the original fissures are concave and have obvious grooves, the filling is obviously lower than the two sides. Cementation or residual bubbles can be seen in larger "trenches".

Gloss changes

After being soaked in strong acid and alkali, jade becomes loose in structure and its luster weakens. After adding organic fillers such as resin or plastic, jade often has resin luster, waxy luster, or a mixture of glass luster with resin luster and waxy luster.

Nowadays, many non-natural jades are not only processed by injecting glue, but also dyed or injected with colored glue to enhance the quality and color of the jade.

Information on the NGTC certificate

According to data feedback from appraisal agencies, jadeite is a popular category for inspection at jewelry exhibitions, but the detection rate of processed jadeite is also relatively high, such as bleaching, wax dipping, filling treatment (B goods), "dyeing + bleaching + filling" treatment (B+C), dyeing treatment (C goods), etc.

Note the markings in the remarks column

Therefore, when purchasing jade, you must not be careless. If you are not sure whether the jade is natural, conducting necessary tests is the best way to protect yourself.

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