prEN ISO 8653
(Main)Jewellery - Ring-sizes - Definition, measurement and designation (ISO 8653:2016)
Jewellery - Ring-sizes - Definition, measurement and designation (ISO 8653:2016)
ISO 8653:2016 specifies a method to measure the ring-size using a ring stick with defined characteristics, which is mainly used during manufacturing steps, and specifies the designation of the ring-size.
NOTE For jeweller-consumer relationships, the finger size is measured with a finger gauge set made up of a ring for each size with the same diameter and tolerance than the ring stick ones.
Schmuck - Ringgrößen - Begriff, Messverfahren und Bezeichnung (ISO 8653:2016)
Bijouterie, joaillerie - Taille de bagues - Définition, mesurage et désignation (ISO 8653:2016)
Nakit - Velikosti prstanov - Definicija, meritve in označevanje (ISO 8653:2016)
General Information
- Status
- Not Published
- Publication Date
- 06-Sep-2026
- Current Stage
- 4020 - Submission to enquiry - Enquiry
- Start Date
- 20-Nov-2025
- Due Date
- 13-Jul-2026
- Completion Date
- 20-Nov-2025
Overview
prEN ISO 8653 (ISO 8653:2016) is an international jewellery standard that defines ring-sizes - definition, measurement and designation. It specifies a reproducible method for measuring ring internal circumference using a ring stick with precisely defined characteristics (primarily for manufacturing and quality-control steps) and provides rules for how ring-sizes are to be designated. For customer fitting, the standard notes that a finger gauge set (rings for each size) with the same diameters/tolerances should be used.
Key Topics and Technical Requirements
- Measurement method: Slide the ring down the ring stick without external force; the measurement point is the ring’s contact point on the stick and depends on the ring’s inside profile.
- Ring-stick characteristics:
- Measurement scale length: 160.0 mm ± 0.5 mm
- Material: metal or material with equivalent wear resistance
- Minimum ring-size: 41; maximum ring-size: 76
- Specified diameters and tolerances for ring-sizes (examples from the standard):
- Size 41 → 13.05 mm ± 0.02 mm
- Size 51 → 16.23 mm ± 0.02 mm
- Size 61 → 19.42 mm ± 0.02 mm
- Size 71 → 22.60 mm ± 0.02 mm
- Size 76 → 24.19 mm ± 0.02 mm
- Inside profiles:
- Rounded inside profile - measurement point is mid-thickness.
- Flat inside profile - measurement point is at the bottom of the thickness.
- Particular ring shapes: Procedures for rings with mountings/signet faces, multiple interlaced circles, and square rings (positioning rules and how to determine the measurement point).
- Designation rule: Indicate the standard number followed by the inner circumference in millimetres rounded to the nearest mm (e.g., Ring‑size ISO 8653 - 43). If the ring is marked, only the circumference may be shown.
Applications and Practical Use
- Ensures consistent ring sizing across manufacturers, brands and quality-control labs.
- Used in production, inspection and acceptance testing during jewellery manufacture.
- Useful for designers, bench jewellers, brand quality managers, and compliance teams to reduce disputes over sizing methods.
- Guides jewellers in consumer-facing measurement by clarifying that a finger gauge set should match ring-stick tolerances.
Who Uses This Standard
- Jewellery manufacturers and production supervisors
- Quality-control and inspection laboratories
- Brand principals and purchasing/specification teams
- Retail jewellers and bench-makers (for consistent sizing practice)
Related
- Developed under ISO/TC 174 (Jewellery). It replaces the earlier 1986 edition and provides updated measurement methods, diameter/tolerance tables and examples for special ring shapes.
Keywords: ISO 8653, ring sizes, ring-size measurement, ring stick, jewellery standard, ring sizing, finger gauge, ring designation.
Frequently Asked Questions
prEN ISO 8653 is a draft published by the European Committee for Standardization (CEN). Its full title is "Jewellery - Ring-sizes - Definition, measurement and designation (ISO 8653:2016)". This standard covers: ISO 8653:2016 specifies a method to measure the ring-size using a ring stick with defined characteristics, which is mainly used during manufacturing steps, and specifies the designation of the ring-size. NOTE For jeweller-consumer relationships, the finger size is measured with a finger gauge set made up of a ring for each size with the same diameter and tolerance than the ring stick ones.
ISO 8653:2016 specifies a method to measure the ring-size using a ring stick with defined characteristics, which is mainly used during manufacturing steps, and specifies the designation of the ring-size. NOTE For jeweller-consumer relationships, the finger size is measured with a finger gauge set made up of a ring for each size with the same diameter and tolerance than the ring stick ones.
prEN ISO 8653 is classified under the following ICS (International Classification for Standards) categories: 39.060 - Jewellery. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase prEN ISO 8653 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2026
Nakit - Velikosti prstanov - Definicija, meritve in označevanje (ISO 8653:2016)
Jewellery - Ring-sizes - Definition, measurement and designation (ISO 8653:2016)
Schmuck - Ringgrößen - Begriff, Messverfahren und Bezeichnung (ISO 8653:2016)
Bijouterie, joaillerie - Taille de bagues - Définition, mesurage et désignation (ISO
8653:2016)
Ta slovenski standard je istoveten z: prEN ISO 8653
ICS:
39.060 Nakit Jewellery
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
INTERNATIONAL ISO
STANDARD 8653
Second edition
2016-01-15
Jewellery — Ring-sizes — Definition,
measurement and designation
Bijouterie, joaillerie — Taille de bagues — Définition, mesurage et
désignation
Reference number
ISO 8653:2016(E)
©
ISO 2016
ISO 8653:2016(E)
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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ii © ISO 2016 – All rights reserved
ISO 8653:2016(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Terms and definitions . 1
3 Apparatus . 1
4 Ring-size measurement . 2
4.1 Method . 2
4.2 Ring inside profile . 2
4.3 Particular shapes of rings . 2
4.3.1 General. 2
4.3.2 Ring with mounting, signet-ring . 2
4.3.3 Ring with several interlaced circles . 3
4.3.4 Square ring . 3
5 Designation . 4
ISO 8653:2016(E)
Foreword
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