5.2cm refers to a ring circumference of 52mm. Currently, the mainstream ring size standards in the market are divided into four types: mainland version ring size, Hong Kong version ring size, American version ring size, and European version ring size, all of which have a circumference of 52mm. The specific selection needs to be based on the comparison table used by the store.
Mainland version ring size comparison chart
According to the table below, the ring with a circumference of 52mm corresponds to the mainland version size 12 and a diameter of 16.6mm.
Hong Kong Ring Size Comparison Table
According to the table below, the ring with a circumference of 52mm corresponds to the Hong Kong version number 11 and a diameter of 15.5mm.
US Ring Size Comparison Table
According to the table below, the ring with a circumference of 52mm corresponds to a US size of around 6 and a diameter of 16.5mm.
European Ring Size Comparison Table
According to the table below, the ring with a circumference of 52mm corresponds to the European size 52 and a diameter of 16.55mm.
