Twenty-five volumes. The knowledge the trade sells, given away.

Handbooks, the house magazine and the market reports — written by our FGAA-qualified gemmologist and reviewed like textbooks — body tone to per-carat brackets, oil scales to proposal logistics. Every volume is free to read in full and free to download, with no signup and no email required. This is knowledge the trade normally sells — in courses, in textbooks, behind subscriptions — and we have chosen to give it away: to buyers anywhere in the world, to jewellers, to students, and to anyone who would simply like to understand what they are looking at. Read it, keep it, share it, quote it. Subscribe only if you would like each new volume as it is published.