Color root(色根): Natural linear structure. Fingernail can’t feel it. It is not a flaw. Won’t influence the firmness.
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Color root crack（色根裂).it is a color root + finger can feel it. basically it is a crack. The area that has different minerals are deposited, so they have different colors. When this mineral and the main minerals are deposited under ground for thousands of years under big pressure. If they are well fused and become as one, it is the color root. When the fusion is not good, it is color root cracked.
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Waterline （水线）: you can see it, but your fingernail can’t feel it. it is a natural structure of jade. Won’t influence the firmness. The texture is more denseness in that area that makes it more transparent.Actually, make the bangle firmer.
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Jade blister（水痘）：it is the shorter/bigger version of the waterline. looks like a bean with water in it. it is a natural structure of jade. Won’t influence the firmness. Actually, make the bangle firmer.
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Hairline （纹）: you can see it, but your fingernail can’t feel it. It is a flaw but won’t influence firmness.
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Crack（裂）: you can see it and your fingernail can feel it. It is a flaw. Some will decrease the firmness, some may not or only have minor effects.
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Surface crack（浅表裂）: You can feel it but it is too superficial to influence the firmness.
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Alongside bangle crack （顺圈裂）: usually won't influence the firmness.
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Around the bangle crack（环绕裂）: The cracks wrap around the bangle horizontally, but the structure is tight, Can't clearly determine the internal situation. This will influence firmness. Usually, The bangle needs to be size down.
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Cut through crack（贯穿裂）: really bad crack. Cross-section, The crack sliced breaks the bangle. This will fatally influence firmness. Usually, The bangle needs to be size down.
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Cotton line(棉): White mineral line. Most of the time, finger can't feel it, but occasionally , finger can feel it due to the mineral different.
