Rings Size Guide

US Size
Inside circumference [US Size] ([mm])
2
41.7
2.5
2.5(42.9)
3
3(44.2)
3.5
3.5(45.5)
4
4(46.8)
4.5
4.5(48.0)
5
5(49.3)
5.5
5.5(50.6)
6
6(51.9)
6.5
6.5(53.1)
7
7(54.4)
7.5
7.5(55.7)
8
8(57.0)
8.5
8.5(58.3)
9
9(59.5)
9.5
9.5(60.8)
10
10(62.1)
10.5
10.5(63.4)
11
11(64.6)
11.5
11.5(65.9)
12
12(67.2)
12.5
121.5(68.5)
13
13(69.7)

Find your fit

Tiffany & Co. uses standard US rings sizes. Refer to our measurement chart or the ruler found in our size guide.

View & download complete guide
Model displaying ring sizes