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How to determine the circle size of a jade bracelet?
The number of rings is determined by the length of the inner ring diameter of the bracelet. The number of bracelet rings is called ring mouth in the industry, which is based on the length of the inner ring diameter of the jade bracelet. Usually, the diameter of the inner ring of an emerald bracelet is between 50mm and 72 mm, and the ring mouth 50 indicates that the inner ring of the bracelet is 50 mm, and so on.

The ring size of jade bracelet can be determined by field trial, red rope measurement and ruler measurement.

Jade bracelet mainly measures the number of turns according to caliper, soft ruler, ruler and other tools. Caliper number measurement, according to the caliper to measure the width of the palm tiger's mouth, to judge the size of the jade bracelet ring number. The method of measuring the palm ring mouth with caliper is more efficient, and of course the error is also a little larger.