Specific dimensions: the circumference of the ring is 64.6 mm and the diameter is 20.6 mm.

1, Chinese mainland standard

The ring in the Chinese mainland size comparison table is 1 1, so the circumference is 5 1mm and the diameter is 16.2mm, which is the most common standard number in China, that is, mainland jewelry brands will make rings according to this standard.

2. China and Hongkong Standards

According to the standard table of some jewelry brand rings in Hong Kong, the ring with the ring number 1 1 has a circumference of 52 mm and a diameter of16.6 mm. ..

3. American standard

The ring size standard in the United States is quite different from that in China. Their ring size 1 1 is usually the size worn by men, because it is relatively large, the corresponding circumference is 64.6 mm and the diameter is 20 mm