Benchmark polished diamonds prices moved 10.1% over the past four weeks, the sharpest swing since Q4 FY26, as inventories abroad normalised and shipping schedules recovered. The move has quickly filtered into spot quotes at Cochin, where dealers reported narrower spreads and thinner volumes through the week.

For corporate buyers, the practical advice from risk consultants is to layer hedges rather than chase the move: cover 40 to 60 percent of the next two quarters at current levels, keep optionality for the remainder and revisit after the next inventory report.

What moved and why

Derivatives data points to cautious positioning. Open interest in polished diamonds contracts rose 12.1% while implied volatility eased, a pattern desk traders read as hedgers adding protection rather than speculators adding risk. Options skew suggests more demand for downside protection than for upside.

The immediate beneficiaries are importers who left positions unhedged. Reliance Industries, which buys roughly 952 tonnes a quarter, said it had trimmed its landed cost by 12.1% since the start of the month and was deferring forward purchases in anticipation of further softness.

On the other side of the ledger, producers are watching margins. Realisations for domestic Film Making suppliers fell 5.2% on the month, and two listed companies trimmed guidance in post-results calls. Management teams pointed to input cost relief as a partial offset, but warned that price competition would intensify.

“Margins, not prices, are the story. Input relief only helps those who can hold their own selling price.”

Winners, losers and margins

Global cues remain mixed. Demand data from USA came in softer than expected, while restocking in UAE offered a counterweight. The net effect is a market that is range-bound in the near term but sensitive to any surprise in freight or policy.

Physical premiums tell a similar story. Delivered premiums at Cochin compressed by about $453 million per tonne equivalent, and buyers report that sellers are now willing to quote longer validity periods, a reversal from the short-fuse offers that dominated earlier in the year.

Positioning and hedging

Currency is an important second driver. The rupee traded in a narrow band against the dollar, helped by steady inflows and a decline in crude, and forward premiums eased to levels that make hedging more attractive for importers with a three-to-six month horizon. Treasury heads say they are extending hedge tenors.

Equity markets have taken a constructive view of the sector. The Film Making index gained 10.1% over the quarter, outpacing the broader market by about two percentage points, with the largest moves in names that disclosed order books extending beyond twelve months.

The range ahead

Strategists are less unanimous about what comes next. One brokerage raised its target for the sector on earnings upgrades, while another cut its rating citing valuations at 5.2% above the five-year average. The disagreement, one fund manager noted, is itself a sign that the trade is maturing.