ISO 24016:2020

Name: ISO 24016:2020 — Jewellery and precious metals — Grading polished diamonds — Terminology, classification and test methods
SKU: ISO 24016:2020
Price: 25 EUR
Availability: InStock

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

Название (английский):

ISO 24016:2020

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

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 55
Дата публикации:: 18 сентября 2020 г.
Издание:: ISO IS 24016 edition 1 version 1
ICS:: 01.040.39

Тип поставки:

Full version25 €Ask AI2 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:1 рабочий день

Цена:25 €

Описание (английский):

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.

Abstract

Похожие стандарты

Другие стандарты ISO

Overview

ISO 24016:2020 - Jewellery and precious metals - Grading polished diamonds: Terminology, classification and test methods specifies standardized terminology, classification rules and practical test methods for grading single, natural, unmounted polished diamonds over 0.25 carat. The standard covers how to describe and measure the essential quality factors of polished diamonds (colour, clarity, cut and finish), plus identification and measurement procedures. It excludes fancy-coloured, synthetic, assembled or treated diamonds except where limited treatments are explicitly allowed (see clause 7.4).

Key topics and technical requirements

ISO 24016:2020 defines procedures and requirements for:

Scope & terminology - Standardized terms for describing polished diamonds and restrictions on allowed stone types.

Mass and measurements - Recommended methods and instruments for determining mass (carat) and physical dimensions.

Colour grading - Grading ranges and masterstone comparison methods (including colour scales such as D–L and M–Z ranges and handling of other hues).

Fluorescence - Description, equipment and testing procedures for blue and non‑blue fluorescence.

Clarity grading - Definitions of clarity grades, plotting of internal characteristics, lighting and viewing distances, and handling of features such as laser drill holes and internal graining.

Cut & proportions - Shape identification and measurement of table size, crown height/angle, pavilion depth/angle, girdle thickness, culet size and total depth; guidance on proportion descriptions and comments.

Finish (polish & symmetry) - Criteria and grading methods for polish and symmetry.

Identification & testing protocols - Detailed procedures for testing mass, measurements, colour, fluorescence, clarity and proportions, plus use of masterstones and recording conventions.

Applications and who uses it

ISO 24016:2020 is intended for professionals and organizations involved in the gem and jewellery supply chain, including:

Gemmologists and diamond grading laboratories - to ensure consistent, repeatable grading and reporting.

Jewellery manufacturers and retailers - to describe product quality, support quality control and verify supplier claims.

Valuers and insurers - to standardize descriptions used in appraisals and policies.

Regulatory and trade bodies - to harmonize terminology and testing across markets.

Using ISO 24016 supports transparency, comparability of grading reports and trust in diamond transactions.

ISO 24016:2020

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and who uses it

Related standards

Технические детали

ISO 8212:1986

Soaps and detergents — Techniques of sampling during manufacture

ISO 20662:2020

Ships and marine technology — Hopper dredger supervisory and control systems

ISO 3021:2023

Adventure tourism — Hiking and trekking activities — Requirements and recommendations

ISO 3826-2:2008

Plastics collapsible containers for human blood and blood components — Part 2: Graphical symbols for use on l…

ISO/IEC 24730-1:2014

Information technology — Real-time locating systems (RTLS) — Part 1: Application programming interface (API)

ISO 8668-5:1992

Aircraft — Terminal junction systems — Part 5: Detail specification for type 3 system

ISO 7574-3:1985

Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and e…

ISO 15638-15:2014

Intelligent transport systems — Framework for cooperative telematics applications for regulated vehicles (TAR…