NA 027

DIN Standards Committee Optics and Precision Mechanics

Project

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

Abstract

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.

Begin

2025-08-27

WI

00410016

Planned document number

prEN ISO 24016

Responsible national committee

NA 027-04-01-01 AK - Diamonds  

Responsible european committee

CEN/TC 410 - Jewellery and precious metals  

draft standard

Jewellery and precious metals - Grading polished diamonds - Terminology, classification and test methods (ISO 24016:2020, including corrected version 2024-03)
2025-11
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Contact

Dipl.-Ing. (FH)

Petra Bischoff

Alexander-Wellendorff-Str. 2
75172 Pforzheim

Tel.: +49 7231 9188-31
Fax: +49 7231 9188-33

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