GJEPC May Numbers Show a Bifurcated Market

India's gem and jewellery exports declined 2.49 percent year on year in May 2026, according to data released by the Gem and Jewellery Export Promotion Council. The headline drop reflects the persistent weight of elevated gold prices on plain gold jewellery exports, which have been the largest single drag on the trade balance through the first half of the fiscal year. The combined April-May 2026 export total stood at 4.27 billion dollars.

What the headline number masks is the divergence inside the category line items. Polished lab-grown diamond exports from India reached 101.50 million dollars in May alone, a 25.99 percent year-on-year increase. The April-May 2026 cumulative for polished lab-grown finished at 194.78 million dollars, up 1.98 percent in dollar terms and 12.96 percent measured in rupee terms. The currency translation matters because Indian polishers and growers report in rupees, and the rupee weakening through Q2 has cushioned reported margins even where dollar growth slowed.

Lab-Grown Has Quietly Overtaken Natural

The structural shift inside the Indian diamond export book continues to compound. India now exports more lab-grown polished diamonds by volume than natural polished, a reversal that was unthinkable five years ago. The volume crossover happened in fiscal 2026 and the May 2026 numbers confirm that the trend is not a temporary blip. For the trade outside India, the read is that Surat and Mumbai have committed cutting capacity to lab-grown at a scale that natural producers cannot match on unit economics.

The pricing dynamic is the part the natural diamond camp keeps trying to talk past. Lab-grown polished is trading at a wholesale floor that Rapaport has called out in its monthly intelligence reports through Q1 and Q2 of 2026, with the small stone segment in particular showing the kind of price compression that does not reverse. Natural polished in the same size categories is holding its own at the wholesale level, but the gap between the two product categories at retail has widened to the point that the buyer-facing distinction is now firmly enforced.

GIA, IGI and HRD have aligned on lab-grown grading methodology and disclosure language across 2025 and 2026, which removed the last ambiguity at the certification level. That clarity is what allowed the retail side to settle into a two-track inventory model. The retailers I cover in earnings season treat lab-grown and natural as two separate businesses with two separate margin profiles, two separate marketing budgets, and two separate buy plans.

GJEPC Flags Duty-Free Gold Supply

The Council formally flagged a concern to the Indian government regarding duty-free gold supply constraints for jewellery exporters in the May 2026 cycle. Plain gold jewellery exports have been hit hardest by elevated gold prices, and any constraint on the duty-free input gold available to authorized exporters compounds the cost issue. The Council asked for the duty-free gold quota mechanism to be reviewed before the festive build for the autumn shipping window.

The April-May 2026 export print at 4.27 billion dollars is below the same period in fiscal 2025 but the year-on-year drop is narrower than the equivalent period in fiscal 2024. In other words, the rate of decline has slowed even though the absolute number is still going the wrong way. Council leadership has pointed to the framework agreement between India and the United States as the medium-term tailwind, but the duty-free input gold question is the immediate operational problem that has not been solved.

What the Retail Trade Should Read Out

The Indian export book is the cleanest read available on the supply side of the global diamond trade. When polished lab-grown shipments grow 26 percent year on year in a single month while natural polished holds flat, the conclusion at the buying desk is straightforward: lab-grown inventory will continue to flood the wholesale market at a pace that natural cannot match, and the differential pricing structure is now permanent.

For US retailers heading into the back half of 2026, the planning question is allocation between the two tracks. JCK and Couture both reported strong attendance in Las Vegas this month, with the show floors emphasizing natural diamond storytelling, but the buy decisions actually placed at those shows reflected the two-track inventory reality. The runway for retailers who want to carry only one of the two product categories is shrinking.

Separately, the De Beers sale process advanced through May and June as Anglo American confirmed its target of closing the divestment before summer, with public-private consortium structures still in front of the bid table. That backdrop on the rough side is the other shoe traders are watching while the lab-grown polished print accelerates. The wider weekly readout is in our trade week wrap, and the retailer health picture is unpacked in our industry roundup.

The structural question for the Indian export book through the rest of fiscal 2027: does the duty-free gold supply situation get resolved before the autumn build, or do plain gold jewellery exports take another step down while lab-grown polished continues to compound at 26 percent year on year?