2. Measure the size of the known bracelet. If you already have a jade bracelet (except gold and silver bracelets) and don't know the size, it's very simple. Just find a ruler and measure the inner diameter of the bracelet. Measure the size of the bracelet with a red line. The size of the bracelet depends on the diameter of the inner ring of the bracelet.
3, you can use a soft ruler or rope to measure the width of the palm (thumb on the root of the little finger) to get the circumference, and then convert the corresponding size. You can also measure the maximum diameter of the bracelet with a ruler, and then choose the appropriate size according to the picture below.