Lab Grown Diamonds Stocks in India

4-Factor Sector Score

An additive sector-relative research score. The four displayed point contributions always equal the total: Growth & earnings (35), Capital efficiency (25), Valuation (20), and Relative strength (20). Missing or stale evidence is absorbed inside the affected factor, never applied as a hidden adjustment.

Missing observations are not scored as bad. Their missing weight lowers confidence and pulls the final score toward neutral. PEG is guarded: positive earnings, positive 5–60% three-year EPS growth, and a positive P/E are required.

Revenue Scale & Growth Durability

Renaissance Global Ltd has the highest Revenue among the 3 Lab Grown Diamonds companies compared here, at ₹2,812 crore. International Gemological Institute Limited is next at ₹1,364 crore. The same company also holds the highest Revenue growth, at 35.1%. 3 of 3 companies report a comparable reading, the latest through Mar 2026.

What the numbers say: Renaissance Global Ltd is the scale leader at ₹2,812 crore, 106.2% ahead of International Gemological Institute Limited. Renaissance Global Ltd's growth is 35.1% from a ₹2,812 crore base, with 15 reported observations in the 20-quarter window. Treat the growth leader as an acceleration candidate, not as equally proven scale.

Investor read: Renaissance Global Ltd is the scale benchmark; Renaissance Global Ltd is the acceleration watch. Promote the challenger only if growth persists and converts into margin and returns.

This conclusion weakens if: Renaissance Global Ltd's growth falls below Renaissance Global Ltd's for two consecutive comparable reports while operating margin also compresses.

Operating Economics & Margin Trend

International Gemological Institute Limited has the highest OPM among the 3 Lab Grown Diamonds companies compared here, at 60%. Goldiam International Ltd is next at 21%. The same company also holds the highest Margin change, at +2 percentage points. 3 of 3 companies report a comparable reading, the latest through Jun 2026.

What the numbers say: International Gemological Institute Limited leads both opm at 60% and margin change at +2 percentage points.

Investor read: International Gemological Institute Limited sets the level benchmark; use the change leader as an inflection watch only after another comparable report confirms it.

This conclusion weakens if: The next two comparable reports reverse the current margin change signal.

Profit Scale & Acceleration

International Gemological Institute Limited has the highest Net profit among the 3 Lab Grown Diamonds companies compared here, at ₹611 crore. Goldiam International Ltd is next at ₹170 crore. Goldiam International Ltd has the highest Profit growth at 45.3%, so level and change sit with different companies. 3 of 3 companies report a comparable reading, the latest through Jun 2026.

What the numbers say: International Gemological Institute Limited leads with ₹611 crore of TTM profit, 259.4% above Goldiam International Ltd. Goldiam International Ltd shows 45.3% growth from a ₹170 crore profit base. Compare the size of the base and persistence before ranking acceleration above profit scale.

Investor read: International Gemological Institute Limited sets the level benchmark; use the change leader as an inflection watch only after another comparable report confirms it.

This conclusion weakens if: The next two comparable reports reverse the current profit growth signal.

Capacity Spending & Returns On It

No company in this Lab Grown Diamonds comparison reports capital expenditure on a comparable basis, so there is nothing to rank here — 0 of 3 companies have a usable current reading. The section is shown rather than removed so an unavailable metric is not mistaken for one that was quietly left out. Filings were read through Jun 2026.

Withheld from this comparison: International Gemological Institute Limited (IGIL) — its two data sources disagree by up to 77% on reported income across 10 comparable periods, so its derived ratios are withheld. A figure two sources cannot agree on is not drawn — the gap is a decision, not missing data.

Debt Load & Balance-Sheet Headroom

Goldiam International Ltd has the lowest Gross debt among the 3 Lab Grown Diamonds companies compared here, at ₹77 crore. International Gemological Institute Limited is next at ₹143 crore. The same company also holds the lowest Net debt, at ₹402 crore net cash. 3 of 3 companies report a comparable reading, the latest through Mar 2026.

What the numbers say: Goldiam International Ltd has the clearest covered balance-sheet capacity with ₹402 crore net cash and gross debt of ₹77 crore. Absolute debt alone does not identify the strongest balance sheet because company scale differs; net debt and debt-to-equity carry more information.

Investor read: Prioritize net-cash capacity and leverage relative to operating scale, not the smallest absolute rupee debt.

This conclusion weakens if: Net debt rises faster than revenue and profit for two consecutive reported periods.

Return On Capital Employed

International Gemological Institute Limited has the highest ROCE among the 3 Lab Grown Diamonds companies compared here, at 68%. Goldiam International Ltd is next at 23.9%. Renaissance Global Ltd has the highest ROCE change at +2.2 percentage points, so level and change sit with different companies. 3 of 3 companies report a comparable reading, the latest through Jun 2026.

What the numbers say: International Gemological Institute Limited leads ROCE at 68%, 44.1 percentage points above Goldiam International Ltd. Renaissance Global Ltd has the strongest latest improvement at +2.2 percentage points. Read the leader beside the density of its reported history: a sparse high return is a candidate; a repeated high return is evidence of durability.

Investor read: International Gemological Institute Limited sets the level benchmark; use the change leader as an inflection watch only after another comparable report confirms it.

This conclusion weakens if: The next two comparable reports reverse the current roce change signal.

Valuation Against Growth & Quality

Goldiam International Ltd has the lowest Guarded PEG among the 3 Lab Grown Diamonds companies compared here, at 0.38×. Renaissance Global Ltd has the lowest P/E at 12.7×, so level and change sit with different companies. 1 of 3 companies report a comparable reading, the latest through Mar 2026.

What the numbers say: Goldiam International Ltd has the lowest comparable Guarded PEG at 0.38×. Only 1 of 3 companies pass the guard, so no broad “cheapest stock” conclusion is defensible unless the current multiple, own-history position and growth durability agree.

Investor read: Treat valuation as permission to investigate, never as a standalone reason to buy.

This conclusion weakens if: The next two comparable reports reverse the current p/e signal.

Enterprise Value & Book Value

Renaissance Global Ltd has the lowest EV/EBITDA among the 3 Lab Grown Diamonds companies compared here, at 9.1×. Goldiam International Ltd is next at 12.4×. The same company also holds the lowest P/BV, at 0.84×. 3 of 3 companies report a comparable reading, the latest through Mar 2026. Its EV/EBITDA series carries 19 reported observations across the 20-quarter window.

What the numbers say: Renaissance Global Ltd leads both ev/ebitda at 9.1× and p/bv at 0.84×.

Investor read: Treat valuation as permission to investigate, never as a standalone reason to buy.

This conclusion weakens if: The next two comparable reports reverse the current p/bv signal.

Market action

Renaissance Global Ltd has the strongest one-year price move in Lab Grown Diamonds at +0.7%. Goldiam International Ltd leads on Mansfield relative strength against NIFTY at +21.1%. 3 of 3 covered companies are above zero on that measure. Every line covers 313 weekly closes through 2026-07-17.

What can make this comparison misleading?

This Lab Grown Diamonds comparison names 7 specific ways its own evidence can mislead, all listed below. All 3 companies here report on comparable dates, so no rank carries a stale marker. 1 draws at least one figure from a second feed with too little overlap to cross-check. 1 has second-feed figures withheld because the two sources disagree.

Which companies are included?

All 3 companies in the canonical Lab Grown Diamonds membership are listed below, largest market value first — nothing is silently dropped, even where a company reports too little to rank. The charts above default to a selective view; this register is the complete set, with each company's own latest reporting date beside it.

AHEAD means the company is beating the index by 5% or more over three months. LAGGING, FUNDAMENTALS UP means it is 20% or more behind over a year while its trailing twelve-month earnings grew 20% or more. Both rules are fixed and applied the same way in every sector.

How was this comparison built?

This comparison is built from the reported filings of 3 Lab Grown Diamonds companies, normalized to a common ₹ scale and a shared quarter axis of up to 20 quarters each. Fundamentals run through Jun 2026 and market data through 2026-07-24. A second data feed fills gaps only after identity and scale reconciliation, and missing observations are never interpolated.

A second feed is read only after its reported income is matched against the primary source on at least three overlapping periods. Where the two agree the figures fill silently. Where there is too little shared history to compare, the figures are still drawn — they are the only evidence there is — and marked ⚠ unverified everywhere they appear. Where the two are known to disagree, nothing from the second feed is drawn and the affected company is named under the chart it is missing from. Every company's standing is listed in the register above.

Lab Grown Diamonds company comparison FAQs

These 17 answers restate the Lab Grown Diamonds comparison above in question form. Every one is computed from the same 3 companies and the same reported filings as the rankings and charts, current through Jun 2026. Price and relative-strength answers run through 2026-07-24. Nothing here is estimated, and none of it is a recommendation.