Best Lab-Grown Diamond Stocks in December 2025: Mini Diamonds, Sky Gold, Goldiam & More – 5Y CAGR Basis

The lab-grown diamond (LGD) industry continues to gain momentum in India, supported by rising consumer demand for ethical, eco-friendly, and affordable alternatives to natural diamonds. With improved technology and expanding retail acceptance, several listed companies are seeing rapid growth.

Let’s explore the top lab-grown diamond–related stocks in December 2025, ranked by their 5-year CAGR.

Top Lab-Grown Diamond Stocks in India – December 2025

Note: Ranking is based on 5-year CAGR as of December 1, 2025.

Overview of the Top Lab-Grown Diamond Stocks – December 2025

1. Mini Diamonds (India) Ltd

Mini Diamonds leads the list with a 121.09% 5-year CAGR, highlighting its strong position in the fast-growing lab-grown diamond segment.

The company recently secured a fresh export order worth $2 million (approx. ₹17.8 crore) from a Singapore-based customer for lab-grown cut & polished diamonds, further strengthening its global footprint and order book.

Key Metrics

• ROCE: 8.68%
• ROE: 9.26%

2. Sky Gold and Diamonds Ltd

Sky Gold continues to deliver growth with a 105.32% 5-year CAGR, supported by its expanding presence in the jewellery and diamond market.

In its Q2 FY26 results, the company reported substantial revenue growth along with an 82% year-on-year increase in net profit, showcasing strong operational efficiency and rising demand momentum.

Key Metrics

• ROCE: 30.39%
• ROE: 28.59%

3. Goldiam International Ltd

Goldiam International maintains a 66.39% 5-year CAGR, driven by its dominance in lab-grown diamond exports and strong manufacturing capabilities.

In Q2 FY26, Goldiam’s consolidated revenues rose 43% year-on-year to ₹2,019 million, while H1 FY26 revenues grew 41% to ₹4,376 million.

Lab-grown diamond jewellery exports contributed 89.9% to the company’s overall export sales during the quarter.

Key Metrics

• ROCE: 22.61%
• ROE: 16.95%

4. Trent Ltd

Trent posted an impressive 42.62% 5-year CAGR, mainly backed by the strong growth of its retail brands Westside and Zudio.

The company is now tapping into the rising demand for affordable lab-grown diamonds. Westside currently operates 20 lab-grown diamond stores, as confirmed by its COO, reflecting a strategic expansion into the fashion-aligned jewellery category.

Key Metrics

• ROCE: 30.1%
• ROE: 31.94%

Top Lab-Grown Diamond Stocks by Net Profit Margin (December 2025)

Top Lab-Grown Diamond Stocks by Debt-to-Equity Ratio (December 2025)

Read More:Best Waste Management & Recycling Stocks in December 2025: Va Tech Wabag, Ion Exchange & More Based on Market Cap.

Conclusion

The lab-grown diamond industry in India continues to develop as technology improves and consumer acceptance widens across both jewellery and lifestyle segments.

While the 5 year CAGR rankings and financial metrics provide useful insight into historical growth and operational performance, they should not be considered the sole basis for making investment decisions.

Disclaimer: This blog has been written exclusively for educational purposes. The securities mentioned are only examples and not recommendations. This does not constitute a personal recommendation/investment advice. It does not aim to influence any individual or entity to make investment decisions. Recipients should conduct their own research and assessments to form an independent opinion about investment decisions.

Investments in the securities market are subject to market risks, read all the related documents carefully before investing.