The most reliable method to identify jadeite! Surprisingly simple

How to identify the authenticity of jade

This is a rather complicated question to answer.

I will explain step by step~

1. Common imitations of jadeite and their identification

2. Identification of A\B\C jadeite

3. New fraud methods

4. Jade quality assessment

1. Common imitations of jadeite and their identification

1. Sodium feldspar jade (also known as "water foam")

It has good water content, and some even have blue flowers. It is mostly used to imitate ice and glass jadeite. It is also easy to identify, has no brittleness (commonly known as fly wings), and feels lighter than jadeite.

2. Quartz jade, such as Miyu, Guicui, Aventurine, Jingbaiyu, etc., have the same characteristic that their internal structure is granular and has no jadeite properties.

3. Chrysoprase

Cryptocrystalline, the internal structure cannot be seen (Note: the internal structure of jade is a typical fiber interwoven structure)

In addition, there are hydrogrossular garnet, green glass, Dushan jade, etc., which are all sold as A-grade goods by unscrupulous merchants in the more mixed markets.

The identification methods are very abstract. If you have any questions, you can find a local jewelry and jade quality inspection station and test it. It only takes five minutes, which is much faster than researching it online. This is the most reliable way to identify jadeite.

When purchasing, look for the authoritative certificate and pay attention to whether the photo, weight, etc. on the certificate are consistent with the product. If necessary, you can confirm it on the official website.

2. Identification of A\B\C jadeite

A-grade jade refers to natural jadeite;

B-grade jade is jade that has been chemically bleached and then filled with resin;

C-grade jade is jade that has been dyed.

What is most common on the market now are B+C goods, which are made by combining B goods and C goods simultaneously, and are soaked in strong acid for filling and dyeing.

The identification method is to observe whether there is the acid-etched mesh pattern that is characteristic of B-grade jadeite.

This is due to the corrosive effect of strong acid, which makes the gaps between jadeite mineral particles very obvious, like spider-web-like cracks, which are called "acid etching lines".

Secondly, observe the color distribution of the jadeite. The green color of B-grade jadeite is like fog. After acid washing, the tightness of the internal structure of the jadeite will be destroyed, so the original color will be dispersed and the color root of the jadeite cannot be found.

Colored roots

Foggy color

3. New fraud methods that need attention

Image from Shenzhen Laboratory of National Inspection Center

When the pendant is illuminated from the side, a bright circle can be clearly seen around the jade egg-shaped surface.

This kind of color-matching jadeite is made by gluing colorless jadeite pieces with good water quality onto inferior jadeite, green glass or green jade pieces coated with green dye, and then camouflaging the bonding areas.

In short, the devil is always one step ahead of the saint. The safest way to determine the authenticity of jadeite is to send it to a quality inspection agency for testing with professional instruments.

4. Jade quality assessment

The reason why we have to add this paragraph is that A-grade jade does not represent good and expensive jade.

There are a lot of A-grade jadeite on Taobao that costs only a dozen yuan. Most of them are indeed A-grade, but the quality is really...

The jadeite that is worth tens of millions at auctions is also A-grade.

The evaluation principles of jadeite are: color, clarity, cut, crack, 2T: transparency, texture, 1V: volume. None of these factors can be missing.

1. The color should be bright, rich and uniform.

2. Transparency and structure

In the industry, the comprehensive performance of jade's transparency and structure is usually referred to as "type" or "ground". For example, glass type, ice type, glutinous rice type, bean type, etc.

3. Carving evaluation (Cut): outline, symmetry, proportion, curvature, thickness, color, etc.

4. Clarity Finally, check whether there are factors that affect the clarity, such as stone flowers, cracks, etc.

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