COVID-19 Resources for ICA Members

CIBJO blue books

These CIBJO Blue Books are sets of grading standards and nomenclature for diamonds, colored gemstones, pearls, coral, precious metals and gemmological laboratories, compiled and updated by CIBJO Commisssions

Widely accepted as the set of global standard for the jewelery industry, the CIBJO Blue Books represent a standard derived from a consensus betweent he broad expertise within CIBJO's commisssions and individuals outside the commissions who have expresses interest in participating in the development of these guidelines.

The application of these guidelines is entirely voluntarily but it is recommended for all persons, partnerships and corporations in all the stages of the jewelry chain of distribution.

These books are living documents and work in progress subject to annual review a reaffirmation.

PDFs below are password protected, for the exclusive use of ICA members.

Describing itself as the “United Nations of the jewellery business,” CIBJO, the World Jewellery Confederation, represents the interests of all individuals, organisations and companies earning their livelihoods from jewellery, gemstones and precious metals. It is the oldest international organization in jewellery sector, having originally been established in 1926. www.CIBJO.org


CIBJO Official Coral Blue Book CIBJO Official Gemmological Laboratory Blue Book CIBJO Official Pearl Blue Book
CIBJO Official Diamond Blue Book CIBJO Official Gemstone Blue Book CIBJO Official Precious Metals Blue Book


Sign up to stay in touch!