Three structured knowledge hubs. 230+ articles. A 10-course trade curriculum. Built from GIA, Christie's, Gübelin, and 30 primary sources. Free forever.
Each hub is a complete, standalone knowledge resource. Use the one you need. Or use all three.
Everything about diamonds. The 4Cs, shapes, grading, lab-grown, the trade, ethics, India market, investment, settings, history, and famous stones. The most complete free diamond resource available.
80 articles across 27 coloured gem species. Ruby, sapphire, emerald, Navratna, alexandrite, and every gem relevant to the Indian market. Treatments, grading, investment, and fraud protection.
10 structured courses for anyone entering the diamond and gemstone trade. From geology to the Rapaport system, from Navratna fraud to the Mumbai bourse. Start from zero and learn the business properly.
The diamond and gem trade has always had a knowledge asymmetry. Sellers know far more than buyers. That asymmetry produces fraud, overpayment, and poor decisions at enormous scale. Claradiam exists to close that gap.
Every factual claim cites GIA, Christie's, AGL, Gübelin, GJEPC, or another named verifiable authority. No opinion pieces. No manufacturer content. No paid promotion.
Claradiam does not sell diamonds or gems. It does not accept advertising. It does not earn affiliate commissions. The only purpose of every article is to give the reader accurate information.
India cuts 90% of the world's diamonds. Jaipur is the coloured gem capital. The Navratna system shapes how hundreds of millions of Indians buy gems. This resource reflects that reality.
The Diamond Codex, Gemstone Codex, and Curriculum are free to use, share, and reference. No paywall, no account, no subscription. Knowledge about an industry this important should be accessible.