According to the mainland size comparison table, 6.3 cm wear No. 23 ring; According to the Hong Kong version of the size table, 6.3 cm to wear a 21 ring. 6.3 cm In the ring size refers to the circumference of the finger circle, 6.3 cm is 63mm, the mainland and Hong Kong version of the ring size comparison table standards are different, you should choose according to the comparison table of your own region.
