View our selection of tanzanite rings. Personally handcrafted by us, our tanzanites range from blueish hue to violet purple. Tanzanite rings include pieces with diamonds and pieces with just the stone alone.
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Ring Size Chart

 Ring Size

Circumference

Diameter 
USA (inch) (mm) (mm)
 3 1.74 44.2 14.10
3.5 1.79 45.5 14.48
4 1.84 46.8 14.88
4.5 1.89 48 15.30
5 1.94 49 15.70
5.5 1.99 51 16.10
6 2.04 52 16.51
6.5 2.09 53 16.92
7 2.14 55 17.35
7.5 2.19 56 17.75
8 2.24 57 18.19
8.5 2.29 58 18.53
9 2.34 59 18.89
9.5 2.39 61 19.41
10 2.44 62 19.84
10.5 2.49 63 20.20
11 2.56 65 20.68
11.5 2.59 66 21.08
12 2.65 68 21.49
12.5 2.69 69 21.89
13 2.74 70 22.33
13.5 2.79 71 22.60
14 2.85 72 22.69