Announced investment in India's Diamond segment has crossed $7.5 billion, with 2,033 projects at various stages of approval, according to an IGEN tracker of public filings and ministry disclosures. About a third have secured land and power, a quarter have placed major equipment orders, and the rest remain in planning.

Environmental performance is entering the conversation. Buyers increasingly ask for energy-use and water-use data, and several projects are designing for renewable power from day one. That adds cost up front but is becoming a condition for premium customers.

The investment picture

Customers abroad are conducting audits at a pace that surprised suppliers. Delegations from Indonesia visited 2,033 sites this year, and qualification cycles that once took 24 months are being compressed to 14 where the supplier can show a stable process and traceable materials.

Funding is available but selective. Venture and private-equity investors committed $174 million to the segment in the past two quarters, with a preference for companies that already hold customer qualification. Banks are lending against contracted offtake rather than promised capacity.

Technology partnerships are filling some of the gaps. Joint ventures with firms in Indonesia and Saudi Arabia bring process know-how and customer access, and licensing deals are enabling Indian firms to enter higher-value segments faster than organic development would allow. Intellectual-property terms are the main negotiating point.

“Power, water and people. Solve those three and the capital follows.”

Constraints that decide timing

Wipro is among the most visible movers. The company said it will invest $7.5 billion over the next four years to build capacity targeting export customers in Indonesia and Saudi Arabia, with first commercial output expected in Q4 FY27. Management described the project as a response to customers seeking a credible second source.

The software layer is attracting attention too. Plant operators report that predictive-maintenance and quality-vision systems have reduced unplanned downtime by 18.6%, and a growing cohort of startups sells these tools as a subscription. Procurement teams say integration with legacy equipment is the largest hurdle.

Partnerships, funding and customers

Government support is substantial but conditional. The central scheme offers up to half of eligible project cost for qualifying units, and several states layer on capital subsidies and power-tariff concessions. Officials say disbursement timelines have improved, with the first tranche released 45 days after milestone certification.

Early operational results from pilot lines are encouraging. One facility reported yields reaching 22.1% within six months of start-up, ahead of internal targets, and a second said that automation cut its defect rate by 7.9%. Executives caution that scaling from pilot to volume is where most projects face their first real test.

What success looks like by 2030

The binding constraints are practical. Specialised equipment has lead times of 12 to 18 months, reliable high-grade power is concentrated in a handful of industrial parks, and the sector needs an estimated 2,033 additional trained engineers over three years. Training institutes are expanding, but the gap is real.