Surat does the math on ten percent

§1The busiest lane takes the hit.

No country has more exposed to the new tariff schedule than India, which cuts and polishes somewhere around ninety percent of the world's diamonds by piece count and sends a large slice of that output to American buyers. The 10% duty that took effect on July 24 is not the highest rate on the board, but it lands on the single busiest lane in the polished trade, and it lands at a moment when the men who own the wheels in Surat have the least room to give.

That thin room is the second story inside the first. Rough is cheap, with De Beers' realised price down about a third year on year, but cheap rough has not rescued cutters, because polished prices have fallen alongside it and the spread that pays a factory's wages has stayed narrow. Surat spent the past year trimming shifts and idling benches; a fresh 10% at the border is a cost that has to be split three ways, among the exporter who books the sale, the American importer who takes the goods, and the shopper who eventually pays the ticket.

§2The exemption draws a map around India.

The exemption for European-polished stones sharpens the choice. A diamond that leaves India as rough, travels to Antwerp to be polished and enters the United States as EU goods can, on paper, sidestep the duty that the same stone would carry if finished in Gujarat. Re-routing at scale is neither quick nor free, and rules of origin will be argued over for months, but the incentive now points away from the world's largest cutting center, which is precisely the outcome its exporters feared.

§3Someone along the chain holds the difference.

India's trade bodies have spent the season lobbying against exactly this, arguing that duties on polished goods punish a labor-intensive industry that competes on cost. The near-term arithmetic is unforgiving: at a 10% rate on a category already running on single-digit margins, some orders simply do not clear, and the ones that do move slower. The question the trade will spend August answering is who, along that chain from bench to counter, is left holding the difference.