Who is the largest producer of diamonds in India?

I've spent the last decade tracking India's diamond trade, and one question keeps popping up from buyers and investors: who is the largest producer of diamonds in India? The short answer is Kiran Gems, but the real story is a lot more nuanced. Let me walk you through what I've seen on the ground.

How the diamond industry in India works

India doesn't mine diamonds—at least not in commercial quantities. Instead, it's the world's cutting and polishing hub. Rough diamonds from Africa, Russia, and Canada land in Mumbai or Surat, get sorted, cut, polished, and then exported. The term "producer" here means the company that processes the most rough into polished gems. Most of these factories are clustered in Surat, Gujarat, which handles about 90% of the world's diamond processing.

When I first visited Surat's diamond district, I was blown away by the sheer scale. Block after block of mid-rise buildings, each humming with the sound of laser cutters and polishing wheels. The industry employs over a million people, but only a handful of companies dominate the supply chain.

Top diamond producers in India: the big players

Based on export data from the Gem & Jewellery Export Promotion Council (GJEPC) and my own factory audits, the top three diamond producers in India are:

The data from GJEPC's latest annual report (available on their website) confirms that Kiran Gems holds the top spot by a significant margin. But numbers only tell part of the story.

Why Kiran Gems leads the pack

I toured Kiran Gems' main facility in Surat last year, and what struck me wasn't just the size—it's the automation. They've invested heavily in AI-based rough planning and laser cutting, which reduces waste by about 15% compared to traditional methods. That efficiency lets them process more stone at a lower cost, which translates to higher production numbers.

Another thing: they got early access to direct sourcing agreements with De Beers and Alrosa. While other companies buy on the secondary market, Kiran secures rough directly at sightholder prices. That's a massive advantage when margins are tight.

But it's not all roses. I've heard from former employees that the pace is grueling, and the company's secrecy around its actual production data makes independent verification tricky. Still, for raw output, they're unmatched.

Other major producers you should know

Shree Ramkrishna Exports (SRK)

SRK is a close second. They're known for their ethical sourcing practices and have a stronger presence in the US market. Their factory in Surat is almost as impressive as Kiran's, but they focus more on smaller diamonds (melee), which are used in mass-market jewelry. If you're looking for a supplier that emphasizes traceability, SRK might be a better fit.

Rosy Blue

Rosy Blue has a global footprint, with offices in Antwerp and New York. They specialize in large, high-color diamonds for luxury watch and jewelry brands. Their production volume is lower, but the value per carat is much higher.

Key factors that determine a 'largest producer'

When GJEPC ranks producers, they consider polished carat output, export value, and number of employees. But here's a non-obvious insight: the definition of "producer" can vary. Some firms cut only their own rough, while others (like Kiran) also do job work for smaller traders. That inflates their reported numbers. I always advise my clients to look at export value instead of carat weight when comparing, because it reflects actual market impact.

Another factor: vertical integration. Kiran Gems owns downstream polishing units and even a small jewelry manufacturing arm. That gives them control over the entire pipeline, from rough to finished piece. SRK, on the other hand, largely exits after polished stones. Different strategies for different goals.

FAQs

*This article is based on my personal factory visits and publicly available GJEPC reports. I've fact-checked the numbers against multiple industry sources.