The inner diameter of ring number 11 varies according to the standards of different countries.
1. Mainland size standard
In the mainland size standard, the inner diameter of ring number 11 is 16.2mm, corresponding to a circumference of 51mm. If you purchase jewelry brands from mainland China, you can use this standard to check the inner diameter of the ring.
2. Hong Kong Dimensional Standards
In the Hong Kong size standard, the inner diameter of ring 11 is 16.6mm, corresponding to a ring circumference of 52mm. The size standards in Hong Kong are not significantly different from those in mainland China, so you can pay some attention when purchasing.
3. American Dimensional Standards
The size standards in the United States differ significantly from those in China, with the inner diameter of ring number 11 being 20mm, corresponding to a ring circumference of 64.6mm. This usually belongs to the size of the ring worn by men.
International Ring Size Comparison Table
