Lab Grown Diamond Manufacturers in India

India has rapidly become the global hub for lab grown diamonds, with Surat and Mumbai leading production. Manufacturers here use CVD (Chemical Vapor Deposition) and HPHT (High Pressure High Temperature) to create certified, sustainable, and affordable diamonds. If you’re a retailer, wholesaler, or jewelry brand, here’s a guide to the best lab grown diamond manufacturers in India in 2025.

Why India Leads in Lab Grown Diamonds

• Surat Diamond Bourse (SDB) is now the world’s largest diamond trading hub, housing major lab grown growers.

• Indian manufacturers emphasize eco-friendly practices, with some even using solar power plants to run reactors.

• Skilled artisans and advanced technology make India competitive in price, scale, and certification.

Why Choose Lab Grown Diamonds from India?

• ✅ Cost-effective compared to mined diamonds

• ✅ Certified by IGI, GIA, and other global labs

• ✅ Eco-friendly & ethical sourcing

• ✅ Wide range: From melee to large stones (up to 15–50 carats)

• ✅ Trusted supply chain via Surat and Mumbai

FAQ Section 

1. Which is the largest lab-grown diamond manufacturer in India?

TheIceLane.com is widely recognized as a leading manufacturer in the space. They operate one of the largest production facilities in Surat, housing over 2,000 CVD reactors to produce high-quality stones at scale.

2. Are lab-grown diamonds from India certified?

Yes. Just like mined diamonds, legitimate lab-grown diamonds undergo rigorous testing. Leading manufacturers provide certification from globally trusted laboratories like IGI (International Gemological Institute), GIA, and HRD. These certificates verify the diamond's authenticity, origin, and the 4Cs (Cut, Color, Clarity, and Carat)

3. How does the cost compare to mined diamonds?

You can expect significant savings. Lab-grown diamonds in India are typically 60–80% cheaper than mined diamonds of the exact same quality and grade, allowing you to get a larger or better-quality stone for your budget.

4. What is the difference between CVD and HPHT diamonds?

Both processes create 100% real diamonds, but they are used for different purposes:

CVD (Chemical Vapor Deposition): Preferred for creating high-purity Type IIa diamonds (the purest form of diamond).

HPHT (High Pressure High Temperature): Often used to produce smaller stones or specific colors, though it can also create larger carat sizes.

5. Can you tell the difference between a lab-grown and a mined diamond with the naked eye?

No. It is impossible to distinguish them visually. Because they share the exact same chemical, physical, and optical properties, they look identical even to a jeweler. The only way to tell them apart is by using specialized equipment in a gemological lab.

6. Do lab-grown diamonds fade, get cloudy, or lose their sparkle over time?

Never. Lab-grown diamonds are real diamonds made of pure carbon. They are the hardest substance on earth (ranking 10 on the Mohs scale) and are chemically identical to mined diamonds. They will retain their brilliance, fire, and durability forever.