How to observe the crack of the jade bracelet
On the surface, the crack seems to be irregular, but according to the master who has experience in opening jade, "not afraid of cracking, it is afraid of small cracks into ruptures." Large cracks can be avoided, that is, there are rules to follow, and small cracks are very It is difficult to avoid, especially internal cracking and cracking.
There are no cracks in the jade bracelet, which has a great influence on its value. With cracks, the bracelet is easy to break once it hits a hard object, so consumers should pay special attention to whether the bracelet has cracks when purchasing jade bracelets. Usually consumers go to buy jade, merchants often use a coin to knock a bracelet to give you a sound, ice and tell you that the sound is crisp and there is no crack. In fact, this method is unscientific. In general, the jade bracelet with delicate texture, whether it is cracked or not, the sound that is knocked out is relatively crisp.
The general experience is to use two fingers to hold the sliver of the bracelet. Looking at the light, look at the light, it is easier to observe the presence or absence of cracks. At the same time, the finger is pressed tightly around the bracelet and then fitted with a magnifying glass. Observe, you can more clearly observe the cracks of the jade bracelet.
The relationship between the crack of the bracelet and the sliver of the bracelet: it can be divided into oblique cracks, vertical cracks, and cracks.
Observing the crack is also to identify the slash or the real crack. The scribe is a trace that is connected along the boundary of the grain. It extends to a certain length and disappears. The crack passes through the crystal grain and has a long extension length. Therefore, the crack of the cross-cut bracelet is more dangerous, and it is easy to break the bracelet, parallel to the crack of the bracelet, and the risk is not so large.
When assessing the value of jadeite materials, the presence or absence of cracks is one of the most important factors to consider. The crack of jade material is not only difficult to observe, but also difficult to use jade material. The crack is the division of jade body and is not continuous, and the crack makes the jade raw material difficult to use. Cracks in the finished product can be easily observed and observed, but must be carefully reviewed to avoid neglect.
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