In a striking display of urgency and strategic maneuvering, Mumbai Customs cleared $319.9 million worth of cut and polished diamonds destined for the United States in the first four days of April 2025. This marks a fivefold increase compared to the same period last year and reflects a sharp escalation in trade activity ahead of new US tariffs on Indian diamond imports.

The sudden export surge is directly linked to the 26% reciprocal tariff on Indian diamonds that came into effect on April 9, a measure announced by former US President Donald Trump. With the clock ticking down to the implementation date, Indian exporters acted swiftly to push inventory across borders and into the American market, aiming to avoid the impending duty and preserve their competitive pricing advantage.

The United States, being the world’s largest consumer of diamonds, plays a crucial role in India’s diamond trade. Nearly one-third of India’s $32 billion gem and jewellery exports are shipped to the US annually. With the imposition of this steep tariff, the traditional cost advantage that Indian diamonds have enjoyed in the US is expected to erode, potentially reshaping trade dynamics between the two nations.

However, this rapid spike in shipments has raised concerns about pressure on supply chains. Many rough diamonds currently undergoing processing are unlikely to be completed in time to meet the tariff-free deadline. As a result, the industry may face delays in deliveries and disruptions in trade flow during the transition period.

The effects are likely to be felt most acutely in Surat, India’s diamond cutting and polishing capital. The potential dip in US demand may force a recalibration of production volumes, which in turn could affect employment and operational continuity in the region. Thousands of workers employed in Surat’s diamond sector depend heavily on exports to the US for steady income and job security.