09 Aug 2020
DiamondWorld Directory
Home |
News
Home
CIBJO Gemmological Commission Report Explores Issues Related to Coloured Gemstones
The special report also provides details about a document prepared by the Gemmological Commission, which it intends will come to serve as a reference point for the industry in the way that it deals with commercial colour terms such as “pigeon blood red” and “royal blue.”
By: Diamond World News Service
|
Sep 24 2018 9:59AM
|
Reference: 16674  

DecreaseIncrease

With fewer than four weeks to go to the opening of the 2018 CIBJO Congress in Bogotá, Colombia, on October 15, 2018, the sixth of the CIBJO commissions’ Special Reports has been released. Prepared by the CIBJO Gemmological Commission, headed by Hanco Zwaan, it reveals the results of a survey of 23 gemmological laboratories from around the world, about whether and how they report on synthetic and treated diamonds.

“The survey provided a clear picture of the similarities and differences on the reports issued by the various laboratories, and perhaps also suggested the requirements and preferences of different markets around the globe,” wrote Zwaan. “Overall the nomenclature used by laboratories is clear about the nature of the stones described, but there are inconsistencies with regard to the precise terms used, and whether or not grading of synthetic and/or treated stones is permitted.”

The special report also provides details about a document prepared by the Gemmological Commission, which it intends will come to serve as a reference point for the industry in the way that it deals with commercial colour terms such as “pigeon blood red” and “royal blue.” Other subjects discussed include how professional opinions can or should be presented separately on laboratory reports, and the necessary standards for governing the use of varietal names for different gemstones.

Follow DiamondWorld on Instagram: @diamondworldnet
Follow DiamondWorld on Twitter: @diamondworldnet
Follow DiamondWorld on Facebook: @diamondworldnet
Related news
Have Your Say
* Your view
* Name:
* Email:
* Town/city:
* Country/State:
*  Company:
 
*  Name:
 
*  Mobile:
 
*  Email:
 
 
Subscribe for DiamondWorld weekly Newsletter
 
Advertisement
HouseAd_Trade Fair
Search News by City
Advertisement
Kosher 23460
Advertisement
Kosher 23460
Recent Issue
2020
AVAILABLE NOW...!
Advertisement
Kosher 23460
News in Pictures
Videos
Young Diamantaires
Pictures: 16
Stunning Jewellery from Cannes 2019
Pictures: 24
Sparkly Jewels at Oscars 2019
Pictures: 19
Golden Globes 2018
Pictures: 15
Spotted: Who Wore What (December 2018)
Pictures: 4
India Diamond Week
Pictures: 8
Spotted: Who Wore What (October 2018)
Pictures: 7
Spotted: Who Wore What (September 2018)
Pictures: 6
70th Emmy Awards
Pictures: 11
35th India International Jewellery Show 2018
Pictures: 46
JJS - IJ Jewellers Choice Design Awards 2015 powered by GIA
Views: 26907
Diamond World Expert Hour with Evgeny Agureev, Deputy CEO, ALROSA
Views: 1096
GJEPC Chairman Interview
Views: 24027
IJ Jewellers Choice Design Awards 2012 - Part 1
Views: 31183
Promo for IJ Awards 2012 at NDTV Profit
Views: 45439
IJ Jewellers Choice Design Awards 2012- Part 2
Views: 57721
Couture India 2016 - A Business Boutique Show by IJ Magazine
Views: 18406
Savjibhai Dholakiya, Surat Businessman (Diamond Merchant) speaks in Vibrant 2015
Views: 44120
IJ Jewellers Choice Design Awards 2013 - NDTV Video
Views: 42306
Advertisement
GIA_2020
Advertisement
Kosher 250300
Member of:
Supporter of: