CIBJO's Opal Guide has officially been launched, providing a comprehensive, internationally recognised classification system for opal. The 186-page guide underwent 60 revisions and includes significant contributions from Australia. It classifies all opal varieties and documents deposits worldwide.

CIBJO's Opal Guide aims to standardise opal nomenclature and is a significant victory for the jewellery industry, bolstering commerical transparency and clarity.

Ruth Benjamin-Thomas, Black Opal Direct

Damien Cody, Cody Opals

Terry Coldham, Intogems

Katherine Kovas, GAA representative, K&K Gems

Anthony Smallwood — Gemmologist and valuer

Kurt Steffens — Geologist and boulder opal miner

Jenni Brammall — Gemmologist and palaeontologist