BUYER RESOURCESJewelry size guide
Practical production measurements for rings, necklaces and bracelets.
RING CONVERSIONMeasure the inside diameter.
Use a rigid caliper across the widest inside point. For production, confirm both the target international size and millimeter diameter.
USUKEUInside Ø
5J ½4915.7 mm
6L ½5216.5 mm
7N ½5417.3 mm
8P ½5718.1 mm
9R ½5918.9 mm
10T ½6219.8 mm
11V ½6420.6 mm
12X ½6721.4 mm
NECKLACE LENGTHCommon finished lengths
- 14–16 in / 36–41 cmChoker and close collar
- 18 in / 46 cmStandard pendant position
- 20–24 in / 51–61 cmLonger everyday and menswear profiles
- 30–36 in / 76–91 cmLong layering styles
BRACELET SIZEWrist plus wearing ease
- Snug fitWrist circumference + 0.6–1.0 cm
- Comfort fitWrist circumference + 1.3–1.9 cm
- Loose fitWrist circumference + 2.0–2.5 cm