From the first diamond found in ancient India to the lab-grown revolution changing the industry today, the most complete diamond knowledge resource ever built.
The four qualities that determine a diamond's beauty and value, explained precisely, visually, and honestly. Start here if you're buying a diamond.
What's actually different, what isn't, and how to decide without being sold to.
For 2,000 years, India was the only source of diamonds in the world. The story starts here.
18 sections. Every dimension of the diamond world, from the earth that makes them to the people who wear them.
See exactly how large a diamond will look on a hand, before you buy.
Enter your budget and priorities, get honest recommendations on trade-offs.
Answer 5 questions and get a personalised, unbiased recommendation.
The Diamond Codex gives India's diamond industry the documentation it deserves, the factories, the technology, the people, the trade ecosystem from Surat to Antwerp.
Read the Surat storyBuying a diamond engagement ring in India? Claradiam covers what every buyer needs to know: how to read a GIA grading certificate, what the 4Cs mean in practice, and how to get the best diamond price for your budget. From 0.30 carat solitaires to 2-carat GIA Excellent round brilliants, the guidance is the same: cut first, certificate always, and never buy without verifying the GIA report at gia.edu.
India is the world's diamond capital: 90% of all diamonds are cut and polished in Surat. The country is also one of the fastest-growing markets for diamond jewellery, lab-grown diamonds, and diamond engagement rings. Whether you are buying in Mumbai, Delhi, Bengaluru or online, this site gives you the knowledge to buy with confidence. Start with the 4Cs buying guide or go straight to the engagement ring guide.
Ruby. Sapphire. Emerald. Kashmir. Mogok. The lead glass fraud. The beryllium diffusion discovery. Pigeon blood, padparadscha, royal blue. The Navratna tradition. Buying Manik and Neelam in India. The same rigour as the Diamond Codex, applied to coloured stones.
The Diamond Codex is produced by Clicarity, a company focused on bringing clarity to complex manufacturing industries. Every article is written to inform, not to sell. Every source is named. Every fact is verifiable. Free, always.