ISO 24016:2020

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

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.

Joaillerie et métaux précieux — Classification des diamants taillés — Terminologie, graduations et méthodes d’essai

Le présent document spécifie la terminologie, les graduations et les méthodes qui sont utilisées pour la classification et la description des diamants taillés non montés individuels de plus de 0,25 carat (ct). Le présent document s'applique aux diamants taillés non montés naturels. Il ne doit pas être utilisé pour les diamants de couleur, les diamants synthétiques, les diamants traités (autres que ceux autorisés en 7.4), ni pour les pierres assemblées.

General Information

• Status: Published
• Publication Date: 17-Sep-2020
• ICS: 01.040.39 - Precision mechanics. Jewellery (Vocabularies)
• ICS: 39.060 - Jewellery
• Technical Committee: ISO/TC 174 - Jewellery and precious metals
• Drafting Committee: ISO/TC 174/WG 2 - Diamonds, gemstones and related products
• Current Stage: 6060 - International Standard published
• Start Date: 18-Sep-2020
• Due Date: 22-Oct-2022
• Completion Date: 18-Sep-2020

Standards Content (Sample)

International
Standard
ISO 24016
First edition
Jewellery and precious metals —
2020-09
Grading polished diamonds —
Terminology, classification and
Corrected version
test methods
2024-03
Joaillerie et métaux précieux — Classification des diamants taillés
— Terminologie, graduations et méthodes d’essai
Reference number
ISO 24016:2020(en) © ISO 2020

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ISO 24016:2020(en)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland

© ISO 2020 – All rights reserved
ii

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ISO 24016:2020(en)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General . 5
4.1 The use of the word “diamond” .5
4.2 Composite stones/assembled stones .5
5 Mass and measurements . 6
5.1 Mass .6
5.2 Measurements . .6
6 Colour . 6
6.1 General .6
6.1.1 Colourless to yellow, brown and grey (D to L) .6
6.1.2 Colourless to yellow, brown and grey (M to Z) .6
6.1.3 Other hues .7
6.2 Colour grades (colourless to yellow, brown and grey) .7
6.3 Colour grades (other than for yellow, brown and grey) .
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2020(E)-09
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2024-02
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ISO/PRF 24016:2020(E)en)
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© ISO 2020 – All rights reserved

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ISO/PRF 24016:2020(Een)
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1 Scope . 1
2 Normative references .
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INTERNATIONAL ISO
STANDARD 24016
First edition
2020-09
Jewellery and precious metals —
Grading polished diamonds —
Terminology, classification and test
methods
Joaillerie et métaux précieux — Classification des diamants taillés —
Terminologie, graduations et méthodes d’essai
Reference number
ISO 24016:2020(E)
©
ISO 2020

---------------------- Page: 1 ----------------------
ISO 24016:2020(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 24016:2020(E)

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General . 5
4.1 The use of the word “diamond” . 5
4.2 Composite stones/assembled stones . 6
5 Mass and measurements . 6
5.1 Mass . 6
5.2 Measurements . 6
6 Colour . 6
6.1 General . 6
6.1.1 Colourless to yellow, brown and grey (D to L) . 6
6.1.2 Colourless to yellow, brown and grey (M to Z) . 7
6.1.3 Other hues . 7
6.2 Colour grades (colourless to yellow, brown and grey) . 7
6.3 Colour grades (other than for yellow, brown and grey) . 7
6.4 Fluorescence . 9
7 Clarity .
...

Norme
internationale
ISO 24016
Première édition
Joaillerie et métaux précieux —
2020-09
Classification des diamants taillés
— Terminologie, graduations et
Version corrigée
méthodes d’essai
2024-03
Jewellery and precious metals — Grading polished diamonds —
Terminology, classification and test methods
Numéro de référence
ISO 24016:2020(fr) © ISO 2020

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ISO 24016:2020(fr)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2020
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: [phone]
E-mail: [e-mail]
Web: www.iso.org
Publié en Suisse

© ISO 2020 – Tous droits réservés
ii

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ISO 24016:2020(fr)
Sommaire Page
Avant-propos .v
Introduction .vi
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Généralités . 6
4.1 L’emploi du mot «diamant» .6
4.2 Pierres composites/pierres assemblées .6
5 Masse et dimensions . 6
5.1 Masse .6
5.2 Dimensions .6
6 Couleur . 7
6.1 Généralités .7
6.1.1 D’incolore à jaune, brun et gris (D à L).7
6.1.2 D’incolore à jaune, brun et gris (M à Z) .7
6.1.3 Autres tonalités .7
6.2 Grades de couleur (d’incolore à jaune, brun et gris) .7
6.3 Grades de couleur (autres que jaune, brun et gris) .
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2020-09
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ICS: 39.060; 01.040.39 .
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DOCUMENT PROTÉGÉ PAR COPYRIGHT
Type du document: Norme internationale
Sous-type du document:
Stade du document: (60) Publication
Langue du document: F

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ISO 24016:2020(Ffr)
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© ISO 2020
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Droits de reproductionTous droits réservés. Sauf indication contraireprescription différente ou nécessité dans le
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contexte de sa mise en oeuvre, aucune partie de cette publication ne peut être reproduite ni utilisée sous quelque forme
Gutter: 0 cm, Header distance from edge: 1.27 cm,
que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie, l’affichageou la diffusion sur
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l’internet ou sur un Intranetintranet, sans autorisation écrite préalable. Les demandes d’autorisation peuventUne
Formatted: Default Paragraph Font, French (France)
autorisation peut être adresséesdemandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du
demandeur.
Formatted: French (France)
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ISO copyright office
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CP 401 • • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
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Tel.Phone: + 41 22 749 01 11 Adjust space between Asian text and numbers
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Fax + 41 22 749 09 47
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www.iso.org
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Publié en Suisse
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ISO 24016:2020(Ffr)
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Avant-propos . x
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Introduction .
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NORME ISO
INTERNATIONALE 24016
Première édition
2020-09
Joaillerie et métaux précieux —
Classification des diamants taillés
— Terminologie, graduations et
méthodes d’essai
Jewellery and precious metals — Grading polished diamonds —
Terminology, classification and test methods
Numéro de référence
ISO 24016:2020(F)
©
ISO 2020

---------------------- Page: 1 ----------------------
ISO 24016:2020(F)

DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2020
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: [phone]
E-mail: [e-mail]
Web: www.iso.org
Publié en Suisse
ii © ISO 2020 – Tous droits réservés

---------------------- Page: 2 ----------------------
ISO 24016:2020(F)

Sommaire Page
Avant-propos .v
Introduction .vi
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Généralités . 6
4.1 L’emploi du mot «diamant» . 6
4.2 Pierres composites/pierres assemblées . 6
5 Masse et dimensions . 6
5.1 Masse . 6
5.2 Dimensions . 6
6 Couleur . 7
6.1 Généralités . 7
6.1.1 D’incolore à jaune, brun et gris (D à L) . 7
6.1.2 D’incolore à jaune, brun et gris (M à Z) . 7
6.1.3 Autres tonalités . 7
6.2 Grades de couleur (d’incolore à jaune, brun et gris) . 7
6.3 Grades de couleur (autres que jaune, brun et gris) . 7
6.4 Fluorescence .
...