Members of the forthcoming CIBJO congress, which will take place in are getting prepared to complicated and interesting work. Agenda of the meeting includes discussion regarding “Blue Books”, which are constantly updated.
Prepared by the CIBJO Coloured Stone Commission, headed by Nilam Alawdeen, the report focuses on the proper disclosure of gemstone treatments and modifications, and in particular about how lead glass-filled rubies should be properly qualified.
In 2010 CIBJO, the American Gem Trade Association (AGTA) and the International Colored Stone Association (ICA) agreed relating to the global method of coloured gemstone disclosure, and Mr. Alawdeen writes: “The international disclosure coding system has been in existence for four years already, but unfortunately it’s still seldom used. Consequently, this is an opportune time to remind the industry of the need for disclosure and traceability, and that a practical system is available to do this.”
CIBJO standards and industry rules in most countries require the trade to make full disclosure of gemstone treatments. But writing a full sentence to disclose a treatment on each and every invoice, packet and jewellery tag has sometimes proven to be impractical.
In 2013 at the previous CIBJO Congress in Tel Aviv delegates from the gemstone trade raised concerns that the existing nomenclature inadequately describes lead-glass filled rubies.
With much prodding from industry stakeholders to arrive at a solution, it was decided that in the case of rubies, any material that is heavily glass-filled should be classified in Annex A of the Gemstone Book under the category Variety/Type as “Ruby and Glass” and under the category Commercial Name as “manufactured/ composite material or product.”
The original coding system was developed by CIBJO’s current Sector A President, Roland Naftule, and was adopted by AGTA in 1985, and then adjusted and fine-tuned for international use by a task force composed of representatives from CIBJO, AGTA and ICA.
The system was approved several months later at the CIBJO Congress in Munich in 2010, and it was incorporated into Annex A of the CIBJO Gemstone Book.