The luster of goods A is bright and has the luster of glass. Its surface is smooth, without pits and trachoma, and it feels convex under a magnifying glass. The surface is reflective, fluid and aura.

The luster of B goods is waxy, and the surface can be seen uneven under the reflected light. If you look inside, you can see that there are fuzzy points between the particles.

The luster of C goods is resin luster, which is similar to that of B goods and looks dull. Under the reflected light, there are many reticular grooves, and the internal structure is fuzzy or fuzzy.

A. the goods are as follows:

Goods b and c are as follows:

2. The knocking sound is different.

The sound of A goods knocking on the door is very nice, and the ending is melodious and crisp. This is because the result of jade has not been destroyed and has good integrity.

Goods B soaked in strong acid and alkali are not as crisp as goods A because of their damaged structure, dull sound and short ending.

The knocking sound of commodity C is duller, thicker and shorter than that of commodity B, and the ending sound is short and inelastic, which soon disappears.

Extended data

The principle of choosing jadeite

1, see water

"Planting well and covering three ugliness" vividly illustrates the importance of jade species.

Water head, or transparency, refers to the ability of jadeite to transmit visible light. There is a jargon: "bracelet depends on the type, pendant depends on the color." It can be seen that the head of the jade bracelet is important. A good bracelet can make a woman look younger and more energetic.

The species rank from high to low is: Laokeng glass species, water species, ice species, ice wax species, wax species, and other species mainly depend on color.

2, look at the craft: There is a saying that "materials and workers share equally", that is to say, a good work, the value of materials and workers accounts for half; The quality of craftsmanship and symbolism have an impact on the price.

3. Others: jade with the same size and thickness, that is, the same quality, is of course large and expensive; Uniformity, that is, water and color are uniform, and it is better without water difference and color difference; Clean means there are no flaws or other noises, and the cleaner the better; Willow leaves are cracked, that is, no cracks, which is better; Aesthetic feeling is the overall feeling of jade objects in many aspects, which also varies from person to person.