International Gemmological Institute India Reports Strong Q3 CY25 Performance with 26% Growth in Certifications
International Gemmological Institute India reported strong Q3 CY25 results with 3.5 million reports issued, representing 26% year-on-year growth. Lab-grown diamonds became the primary revenue driver at Rs. 153.8 crore (52.3% share), while the company maintained healthy EBITDA margins around 58%. The Blackstone-backed certification leader continues to benefit from increasing demand for diamond authentication services across global markets.

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International Gemmological Institute India, the Blackstone-backed diamond certification leader, has reported strong operational performance in Q3 CY25, demonstrating the resilience of its business model amid evolving market dynamics. The company's role as India's largest independent player in diamond and gemstone certification continues to strengthen, with significant growth in report volumes and sustained profitability margins.
Strong Volume Growth Drives Q3 CY25 Performance
The company's operational metrics for Q3 CY25 showcase robust demand for certification services across multiple categories:
| Metric | Q3 CY25 | Q3 CY24 | Change |
|---|---|---|---|
| Reports Issued | 3.5 million | 2.7 million | +26% YoY |
| EBITDA Margins | ~58% | 58.8% | Stable |
| PAT Margins | 42.7% | 43.8% | Marginal decline |
| Average Price per Report | Rs. 854 | Rs. 898 | -5% YoY |
The 26% year-on-year increase in report volumes demonstrates the company's ability to capture growing demand for diamond certification services, particularly as market participants seek greater transparency and authentication.
Lab-Grown Diamonds Emerge as Primary Revenue Driver
The revenue composition for Q3 CY25 reveals a significant shift toward lab-grown diamond certification, reflecting broader industry trends:
| Certification Category | Revenue (Rs. crore) | Share (%) |
|---|---|---|
| Lab-grown diamonds | 153.8 | 52.3% |
| Natural diamond jewellery | 61.5 | 20.9% |
| Natural diamonds | 49.0 | 16.7% |
| Lab-grown diamond jewellery | 24.3 | 8.2% |
| Gemstones and others | 5.7 | 1.9% |
| Other operating income | 9.6 | - |
Lab-grown diamonds have become the single largest revenue contributor at Rs. 153.8 crore, representing 52.3% of total certification revenue. This shift highlights the company's successful positioning to benefit from the rapid adoption of lab-grown diamonds across global markets.
Impressive Long-Term Growth Trajectory
The company's standalone performance over the CY21-CY24 period demonstrates exceptional scalability and margin expansion:
| Parameter | CY21 | CY24 | CAGR |
|---|---|---|---|
| Reports Issued | 4.3 million | 9.3 million | 29.5% |
| EBITDA Margins | 66% | 72.8% | Expansion |
| PAT Margins | 47% | 55.9% | Expansion |
| EBITDA Growth | - | - | 33.5% |
| PAT Growth | - | - | 36.8% |
These metrics illustrate a business model with strong operating leverage, where increased volumes translate into improved profitability. The expansion of both EBITDA and PAT margins over this period reflects the company's ability to scale efficiently while maintaining service quality.
Market Position and Strategic Advantages
International Gemmological Institute India operates as India's largest independent diamond and gemstone certification company, commanding nearly half of the domestic accreditation market. The company's infrastructure spans 31 laboratories and 18 Schools of Gemology across 10 countries, providing comprehensive coverage for global certification needs.
The company's current market capitalisation stands at approximately Rs. 13,429 crore, with shares trading around Rs. 311. Blackstone maintains a controlling 76.55% stake, while other institutional investors include the Government of Singapore (1.32%) and Abu Dhabi Investment Authority (1.33%).
Business Model Resilience
The company's performance demonstrates the strength of its certification-based revenue model, which benefits from increasing diamond trade volumes rather than price appreciation. As lab-grown diamonds continue gaining market acceptance and require clear differentiation from natural stones, the demand for reliable certification services is expected to remain robust. The slight decline in average pricing per report to Rs. 854 from Rs. 898 indicates that growth is primarily volume-driven, supported by the company's ability to process higher throughput efficiently.

































