Size Guide

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Size Guide
How to measure your ring diameter
Ring – inner diameter (measured in millimeters, from inner edge to inner edge).

Follow these steps and compare the value with the numeric table below. ABGioielli uses Italian (EU) sizes.

  1. Step 1: Find a ring that fits you well.
  2. Step 2: Place the ring on a ruler and measure the widest internal area, from inner edge to inner edge. Round to the nearest millimeter and compare with the table below.
Rings – IT Sizes ↔ Inner diameter

IT sizes correspond approximately to the internal circumference in mm. The diameter is calculated as circumference/π and rounded to 0.1 mm.

IT Diameter (mm) Circumference (mm)
4 14.0 44
5 14.3 45
6 14.6 46
7 15.0 47
8 15.3 48
9 15.6 49
10 15.9 50
11 16.2 51
12 16.6 52
13 16.9 53
14 17.2 54
15 17.5 55
16 17.8 56
17 18.1 57
18 18.5 58
19 18.8 59
20 19.1 60
21 19.4 61
22 19.7 62
23 20.1 63
24 20.4 64
25 20.7 65
26 21.0 66
27 21.3 67
28 21.6 68
29 22.0 69
 30 22.3 70

Tip: for wide bands (≥ 5–6 mm) consider half/one size larger.

Bracelets – Wrist circumference ↔ Recommended length
Wrist circumference Snug fit Comfort fit
14 cm 15 cm 16–16.5 cm
15 cm 16 cm 17–17.5 cm
16 cm 17 cm 18–18.5 cm
17 cm 18 cm 19–19.5 cm
18 cm 19 cm 20–20.5 cm
Necklaces – Standard lengths
Length Name Approximate position
38–40 cm Choker Base of neck
42–45 cm Princess Collarbone
50–55 cm Matinee Above the chest
60–70 cm Opera Center of chest
80–90+ cm Sautoir Below the chest / long

Measurements may vary depending on finger/wrist shape and the width of the model. If you are between two sizes, contact us: we will help you choose.