Indian Diamond exporters shipped $4.7 billion of goods to Singapore in Q4 FY27, a rise of 17.5% on the same period last year and the strongest quarterly print since 2022. Customs data reviewed by IGEN shows the increase was broad-based, with castor oil accounting for just under a third of the gain.

Competitors are not standing still. Suppliers in South Korea have cut prices aggressively in recent months and are courting the same buyers with long-term agreements. Indian exporters who win on price alone, analysts warn, will find their position tested when currency tailwinds fade.

Where the growth is coming from

Buyers in Singapore have spent two years reducing reliance on a single source country, and Indian suppliers have been the principal beneficiary. Procurement managers cite shorter lead times out of Kolkata, competitive pricing after the rupee's modest depreciation, and a growing base of certified plants as the reasons for switching.

Tariff structures are shaping the mix of exports. Under the current schedule, finished goods face a duty of 8.3% in Singapore, while intermediate inputs enter at a reduced rate, which has encouraged Indian firms to ship semi-finished lots for final processing near the customer. That shift supports volume but dilutes unit value.

Compliance remains the quiet constraint. Importers in Singapore now require traceability documentation down to the batch level, and exporters without digital record-keeping are finding themselves excluded from tender shortlists. Industry associations say fewer than half of small suppliers currently meet the standard.

“Buyers are not leaving a supplier, they are building a portfolio. India is now in that portfolio for the first time in many categories.”

Margins, freight and payment risk

For smaller exporters, the playbook emerging from the strongest performers is consistent: invest early in certification, lock freight with annual contracts, hedge at least half of currency exposure, and diversify into at least two markets so a single policy change cannot erase a year's margin.

Government support is arriving in pieces. The commerce ministry has extended interest-equalisation benefits for another year and approved $283 million for market-access initiatives, including buyer-seller meets in Singapore. Exporters say the funds help but are less valuable than faster refunds of duties and taxes, which still take about 40 days.

Competition and market access

The picture is not uniformly bright. Freight rates on the corridor, though 8.3% below their peak, remain volatile, and several mid-sized exporters say payment cycles have lengthened to 75 days from 55. Trade-finance providers report a pickup in requests for credit insurance and invoice discounting.

Services linked to goods trade are growing in parallel. Testing, certification and logistics companies serving the corridor reported double-digit revenue gains, and at least four Indian firms have opened warehouse or light-assembly facilities in Singapore to sit closer to customers and shorten delivery windows to under ten days.

Outlook for the next four quarters

Dr. Reddy's Laboratories reported that its Singapore order book has doubled since January and now represents 26.7% of export revenue. The company is adding a second shift at its main plant and has booked additional container allocation on the Kolkata-Singapore service through the end of 2028.