LULU DIAMONDS® uses standard US & European rings sizes.
Please refer to our measurement chart below.
US Size Inside circumference (mm)
5 49.6
5.5 50.70
6 50.8
6.5 53.10
7 54.40
7.5 55.40
8 56.80
8.5 58.10
9 59.30
9.5 60.30
10 61.90