Jade grade division

The value of jadeite is not judged by the age of the age. The collection of jadeite must not only choose pure natural authenticity, but also pay attention to "species", "color" and "water head". "Plant" is the texture and structure of jadeite. The finer the texture, the more crystal clear the jade is. The "color" refers to the color, the color is uniform and the color is positive, the thick, the green is the top grade; the "water head" is the transparency, the luster is crystal, Translucent is the top grade, and the so-called "glass type" is the emerald with high transparency.

The evaluation of jadeite is distinguished by five aspects: species (4 in total), water (5 in total), bottom (in total 4), color (6 in total), and work (4 in total) (4 in total)

The species refers to the texture of jadeite, and is also the most basic description of a jadeite product. In the market, the old species, new species, glass species, ice species, egg whites, bean seeds, oil greens, blue Flowers, blue water, clear water, etc. are customary business names, but because these business names do not have a clear definition of standards, they cannot be used as our grading standards. In fact, the size of the crystal particles of jadeite and the relationship between these particles are the main reasons for determining the commercial varieties of jadeite, and the following grading standards have been developed:

Level division standard

The first-order structure is fine and compact, and there are no mineral particles and composite primary cracks under the magnifying glass of 10 times. The particle size is less than 0.1mm.

Class 2 structure is dense, 10 times magnifying glass sees mineral particles and few small composite primary cracks, particle size is 0.1~1mm

The 3-level structure is not dense enough. Under the magnifying glass of 10 times, the mineral particles and the local fine composite primary cracks are seen. The particle size is 1~3mm.

The 4th grade structure is loose, the particle size is very large, and the particle size is above 3mm.