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ISO 24016:2020

Jewellery and precious metals — Grading polished diamonds — Terminology, classification and test methods

Sep 18, 2020

General information

90.93     Feb 16, 2026

ISO

ISO/TC 174

International Standard

39.060     01.040.39  

English   French  

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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.

Life cycle

NOW

PUBLISHED
ISO 24016:2020
90.93 Standard confirmed
Feb 16, 2026

National adoptions

naSRPS EN ISO 24016:2025  
ISS

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

40.60   Close of voting

PKS C174 more