1. Cracks or stone lines usually appear in the through grain. Cracks have a great influence on the value and daily wear of jade bracelets. Deep and large cracks in the grain will cause the jade bracelet to break.
2. If there are cracks on the jade surface, it will obviously feel that the hand is resting and the strokes are not smooth, that is, there are concave cracks, which will affect the quality of use.