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EN ISO 24016:2026

Jewellery and precious metals - Grading polished diamonds - Terminology, classification and test methods (ISO 24016:2020, including corrected version 2024-03) EN ISO 24016:2026

Publication date:   May 18, 2026

General information

60.60   Standard published   Mar 18, 2026

CEN

CEN/TC 410 Consumer confidence and nomenclature in the diamond industry

European Norm

01.040.39   Precision mechanics. Jewellery (Vocabularies) | 39.060   Jewellery

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Scope

This document specifies the terminology, classification and the methods that are used for the grading and description of single unmounted polished diamonds over 0,25 carat (ct).
This document applies to natural, unmounted, polished diamonds. It is not to be used for fancy coloured diamonds, synthetic diamonds, treated diamonds (other than is allowed for in 7.4), nor for assembled stones.

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PUBLISHED
EN ISO 24016:2026
60.60 Standard published
Mar 18, 2026

Relations

Adopted from ISO 24016:2020 IDENTICAL




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