CIBJO RESOURCES

BLUE BOOKS

The Diamond Book

The Gemstone Book

The Pearl Book

The Coral Book

The Precious Metals Book

The Gemmological Laboratories Book

The Responsible Sourcing Book

Japanese translation of
The Responsible Sourcing Book

GUIDELINES

Guide for Classifying Natural Pearls & Cultured Pearls

Guide for Classifying Natural Pearls & Cultured Pearls
(Italian Translation)

Retailer’s Reference Guide

CIBJO Do’s & Don’ts Guide

Laboratory-Grown Diamond Guideline

ESG Principles for
Laboratory-Grown Diamond 

Diamond Terminology Guideline

Precious Coral Guideline

Emerald Guide

Sapphire Guide