Expansion of India’s Lab Grown Diamond Market

India’s Push for Lab-Grown Diamonds: High Hopes, Uneven Foundations

In 2024, India processed approximately 90% of the world’s diamonds, contributing nearly 75% of global turnover by value for the natural diamond industry. This dominance is now pivoting to a new frontier—lab-grown diamonds (LGDs)—with industry forecasts projecting LGDs to account for 16% of the global diamond market by 2029, up from 12% in 2024. While this growth trajectory appears promising, it raises critical questions about market readiness, regulatory alignment, and long-term sustainability.

Institutional Framework: The Engine Behind Expansion

The expansion of India’s lab-grown diamond market is not happening in a vacuum. Key agencies such as the Gem & Jewellery Export Promotion Council (GJEPC) are driving the shift with backing from central policy initiatives. The government, through its 2023 Union Budget, allocated ₹240 crore towards research and development of lab-grown diamond manufacturing technology, with a specific focus on scaling Chemical Vapour Deposition (CVD) methods. This funding falls under the purview of the Ministry of Commerce and Industry, which oversees diamond trade regulations.

India’s Precision Engineering Institutes are emerging as vital actors in developing indigenous expertise in HPHT and CVD techniques. However, industry players have expressed concerns about the potential regulatory blind spots in ensuring quality certifications for LGDs, as the Bureau of Indian Standards (BIS) has lagged in formalizing standards specific to lab-grown diamonds, unlike its certifications for natural diamonds.

The Ground Realities: Not Just Economic Metrics

Despite the optimistic growth forecasts, several market realities remain underexplored. First, the claim that lab-grown diamonds are “eco-friendly and conflict-free” is overly simplistic. CVD processes still rely on energy-intensive vacuum chambers that may exacerbate emissions in coal-reliant grids like India’s. Unlike its counterparts in Canada—where clean energy powers LGD laboratories—India’s progress toward sustainable manufacturing faces obstacles from its energy transition challenges.

Second, while LGDs avoid the socio-political strife associated with diamond mining (the so-called 'blood diamonds' issue), ethical supply chain verification mechanisms remain limited. For example, the provenance of 'seed crystals' used in the CVD process is largely unregulated, opening potential vulnerabilities to mislabeling and fraud.

Third, job transition is an unaddressed fallout. India’s diamond polishing hubs—primarily located in Surat—employ lakhs of semi-skilled workers. With LGDs demanding advanced technological skills, state governments in Gujarat and Maharashtra must anticipate and mitigate risks to livelihoods, potentially through targeted reskilling programs or incentives for upskilling micro-enterprises.

Structural Tensions: Policy Ambition vs Reality

One major friction lies in the Centre-State coordination. While the Centre's funding seems ambitious, successful implementation is contingent on localized capacity. For instance, Gujarat’s diamond hubs are yet to articulate state-specific strategies for LGD ecosystem development. Further delays in integrating energy-efficient technology into LGD labs could undercut India’s claims of global leadership in the segment.

Another challenge involves international trade dynamics. The irony is that geopolitical factors may inadvertently restrict market expansion. Take the United States—India’s largest buyer of natural diamonds—as an example. U.S. tariffs on synthetic goods coupled with consumer preference for eco-certified LGDs may compel India’s export houses to adopt stringent environmental and trade compliance standards, an area where India currently lags.

Lessons from China: Leveraging Infrastructure, Missing the Narrative

China presents a compelling comparison. Leveraging state-driven infrastructure initiatives, China has rapidly scaled its LGD manufacturing base, using renewable energy inputs to produce bulk diamonds for optical and electronic industries—not merely jewellery. This diversification contrasts sharply with India’s export-driven, jewellery-centric approach. While China's trade in LGDs remains robust, its lack of branding in global consumer markets keeps Indian exporters ahead in jewellery-grade diamonds.

What this reveals is a gap: India’s industry remains highly dependent on jewellery consumers while underutilizing the expanding markets for LGDs in industrial applications, including quantum computing and medical imaging.

What Will Define Success?

Beyond headlines and projections, success will require robust tracking mechanisms. Metrics such as export growth in industrial-grade LGDs, state-level implementation of energy-efficient CVD labs, and reskilling initiatives for displaced workers should act as touchstones. At the institutional level, aligning BIS standards with international certifications like the Responsible Jewellery Council norms will be critical to boosting trust in India-produced lab diamonds.

Ultimately, while the potential of lab-grown diamonds is promising, it is improbable that they will completely replace natural diamonds. Much rests on how emerging tensions—over sustainability, labour displacement, and international norms—will play out. The ₹240 crore allocation signals intent, but robust action will determine outcomes.

UPSC Integration

Prelims MCQ 1: Which of the following technologies is used for manufacturing lab-grown diamonds?

• A. Electrolysis
• B. Chemical Vapour Deposition (Correct Answer)
• C. Cryogenic Milling
• D. Ozone Disintegration

Prelims MCQ 2: The primary difference between natural diamonds and lab-grown diamonds is:

• A. Physical hardness
• B. Optical properties
• C. Absence of nitrogen in lab-grown diamonds (Correct Answer)
• D. Lab-grown diamonds are not composed of carbon

Mains Question: "To what extent is India’s lab-grown diamond market prepared to integrate sustainability and ethical standards while addressing labour displacement concerns? Discuss."

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