A, B, C jade and their identification

1. Jadeite optimization processing methods can be divided into two categories.

The main optimization methods are: wax dipping and heat treatment. This optimized jade is the same as untreated natural jade and can be regarded as "A-grade" jade.

The main processing methods are: bleaching, wax dipping, bleaching, filling, etc. This kind of treated jade is commonly known as "B-grade" jade. Jade that has been dyed is commonly known as "C-grade" jade.

2. Classification of A, B and C jadeite

Grade A jade products are natural jade products that have not been processed in any way; Grade B jade products are jade products that have been etched with strong acid and injected with glue; Grade C jade products are jade products that have been artificially dyed; Grade B+C jade products are jade products that have been etched with strong acid + injected with glue + dyed.

3. Identification of A, B and C grade jadeite

A-grade jadeite has a variety of colors, many of which are unevenly distributed, and have color roots, a glassy luster, and visible "jade texture" and "orange peel effect" on the surface. It can be identified with the aid of small instruments such as spectroscopes and fluorescent lamps. Identification laboratories can use large instruments such as infrared spectroscopy to detect absorption peaks for identification.

The glassy luster of A-grade jadeite

The color root of A-grade jadeite (gradually spreading outward from a point or a line)

The "orange peel effect" on the surface of A-grade jadeite (observe the boundary between light and dark)

B-grade jadeite has a clean base color without any impurities, and a greasy/waxy luster; when observed under magnification, it has a loose structure and acid-etched patterns on the surface; it can be identified with the aid of small instruments such as spectroscopes and fluorescent lamps; identification laboratories can use large instruments such as infrared spectroscopy to detect the absorption peaks of organic matter for identification.

The color distribution of C-grade jadeite is relatively uniform. The color floats on the surface and is concentrated between the particles. It has a colorless root and an oily-glassy luster, with concentrated color visible in the cracks. It can be identified with the aid of small instruments such as spectroscopes and fluorescent lamps. Identification laboratories can use large instruments such as infrared spectroscopy to detect absorption peaks for identification.

B+C grade jadeite has dull color and oily luster, with the characteristics of both B and C grade jadeite. It can be identified with the aid of small instruments such as spectroscopes and fluorescent lamps. Identification laboratories can use large instruments such as infrared spectroscopy to detect the absorption peaks of organic matter for identification.

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