https://www.miningweekly.com

World Jewellery Confederation welcomes new ISO diamond grading standard

23rd September 2020

By: Marleny Arnoldi

Deputy Editor Online

     

Font size: - +

The World Jewellery Confederation (Cibjo) has welcomed the new publication by nongovernmental body International Standards Organisation (ISO) of the internationally recognised diamond grading standard and says it is a historic moment for the global diamond industry.

The confederation explains that the standard is the first-ever that has been approved by the body that specifies the terminology, classification and the methods to be used for the grading and description of single unmounted polished diamonds.

“For the first time, a strictly defined diamond grading system has been ratified by the world’s leading standards body, formally recognising principles and terminology that, to date, had not been approved by any impartial and international authority.

“The ISO 24016 essentially parallels the Cibjo Diamond Blue Book, meaning that the confederation’s widely-accepted standard is effectively validated by ISO,” notes Cibjo president Gaetano Cavalieri.

The standard applies to natural, unmounted, polished diamonds of more than 0.25 ct and aims to set rules for determining – with maximum prevision and accuracy – the mass, colour, clarity and cut of individual polished diamonds.

There has been a need for a unique ISO standard for grading polished diamonds, since some diamond grading reports are issued based on different standards by different laboratories, leading to different results for the same individual diamond.

These mixed results damage the reputation of the whole diamond trade, says Cibjo.

The standard does not apply to fancy coloured diamonds, synthetic diamonds, assembled stones or diamonds treated by methods other than laser drilling.

ISO has another standard for defining specific nomenclature for natural diamonds, synthetic diamonds and diamond simulants.

“There is no doubt that these two international ISO standards, together with the Cibjo Blue Diamond Book, will help boost consumer confidence in the industry,” says Cibjo diamond commission president Udi Sheintal, adding that the timing is relevant now when clear distinctions need to be made between lab-grown diamonds and natural diamonds.

Edited by Chanel de Bruyn
Creamer Media Senior Deputy Editor Online

Comments

The functionality you are trying to access is only available to subscribers.

If you are already a subscriber, you can Login Here.

If you are not a subscriber, you can subscribe now, by selecting one of the below options.

For more information or assistance, please contact us at subscriptions@creamermedia.co.za.

Option 1 (equivalent of R125 a month):

Receive a weekly copy of Creamer Media's Engineering News & Mining Weekly magazine
(print copy for those in South Africa and e-magazine for those outside of South Africa)
Receive daily email newsletters
Access to full search results
Access archive of magazine back copies
Access to Projects in Progress
Access to ONE Research Report of your choice in PDF format

Option 2 (equivalent of R375 a month):

All benefits from Option 1
PLUS
Access to Creamer Media's Research Channel Africa for ALL Research Reports, in PDF format, on various industrial and mining sectors including Electricity; Water; Energy Transition; Hydrogen; Roads, Rail and Ports; Coal; Gold; Platinum; Battery Metals; etc.

Already a subscriber?

Forgotten your password?

MAGAZINE & ONLINE

SUBSCRIBE

RESEARCH CHANNEL AFRICA

SUBSCRIBE

CORPORATE PACKAGES

CLICK FOR A QUOTATION