The Nirav Modi Scandal That Changed Diamond Trade Financing

Imagine a prominent Indian jeweller, Nirav Modi, obtaining billions of dollars in fraudulent Letters of Undertaking, essentially bank guarantees one branch of Punjab National Bank issued without proper authorisation or collateral, that Modi's companies then used to secure financing from other banks' overseas branches, an approximately $1.8 billion fraud uncovered in 2018 that became one of India's largest-ever banking scandals and directly implicated the diamond and jewellery trade's financing practices specifically.

The scandal's aftermath reshaped diamond trade financing structurally rather than just damaging one company's reputation, the Reserve Bank of India responded by banning Letters of Undertaking as a trade credit instrument entirely across the Indian banking system, removing a financing mechanism the broader gem and jewellery trade, not just Modi's companies, had relied on for working capital to fund rough diamond purchases and processing before receiving payment from buyers.

This regulatory response created genuine, lasting friction for legitimate diamond traders and manufacturers, covered elsewhere on this site as an industry employing over a million workers across Surat, Mumbai and Jaipur, working capital financing became measurably harder and more expensive to access following the LoU ban, since alternative trade finance instruments generally carry higher costs and more stringent collateral requirements than the LoU mechanism the industry had built its financing practices around for years.

This episode illustrates a genuine pattern worth understanding alongside the diamond financing challenges implicit throughout this page, capital-intensive trades like diamond cutting and trading, where businesses must pay for rough stones well before finished goods generate sale revenue, depend heavily on efficient trade finance mechanisms, meaning a single major fraud case can trigger regulatory responses with consequences reaching far beyond the fraudulent company itself, tightening credit access for an entire honest industry in the fraud's aftermath.