The books detail standards for diamonds, colored gemstones, pearls, coral, precious metals, and gemological laboratories
The latest editions of all six CIBJO Blue Books are now available for download from the CIBJO website.
The books detail the international group’s grading and nomenclature standards for diamonds, colored gemstones, pearls, coral, precious metals, and gemological laboratories. The group reviews the standards on an annual basis, taking into account new discoveries and technologies.
For individuals who are not members of a CIBJO-member organization, each download will cost 9.90 Swiss francs ($9.84). All six Blue Books can be downloaded as a single package for 49.90 Swiss francs.
Any individual who is a member of an organization that belongs to CIBJO can receive the books free of charge.
(Photo courtesy of CIBJO)