Custom Lab Grown Diamond Manufacturer in India
Custom CVD & HPHT lab grown diamonds manufactured to your exact specifications.
Nishal Gems is a Surat-based lab grown diamond manufacturer and exporter serving jewellery brands, wholesalers, retailers and B2B buyers worldwide. We manufacture diamonds according to your requirements, including shape, carat, dimensions, color, clarity and certification.

HOW IT'S MADE
Every custom order runs through the same production discipline as our standard inventory — grown, cut and certified to your exact specification, in-house.
01
CONSULTATION
Share your shape, carat and quantity requirements with our team.
04
CUTTING & POLISHING
Precision cut to specification by our craftsmen.
02
DESIGN & PLANNING
We confirm cut specifications and a production timeline.
05
CERTIFICATION
Graded and certified before it ships to you.
03
CVD / HPHT GROWTH
Rough diamond grown in-house on our Surat production floor.
OUR SERVICES
Customization built for jewelers and wholesale buyers
Nishal Gems has been a believer in bringing opulence through custom lab-grown diamonds — cut to your shape, carat, color and clarity requirements.
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We aim to deliver the purest, brilliantly sparkling stones, manufactured in different shapes, sizes, colors and patterns to your order.

Frequently Asked Questions
1. Does Nishal Gems manufacture custom lab grown diamonds in India?
Yes, Nishal Gems is a custom lab grown diamond manufacturer in India, based in Surat, Gujarat. We manufacture custom CVD and HPHT lab grown diamonds according to specific requirements, including carat weight, shape, dimensions, colour, clarity and certification. Our manufacturing process covers diamond growth, planning, cutting, polishing and certification, allowing us to provide custom diamonds for jewellery brands, wholesalers and international buyers.
2. What specifications can I customize for a lab grown diamond?
Nishal Gems can manufacture custom lab grown diamonds according to your exact specifications, including carat weight, diamond shape, dimensions, colour, clarity and certification requirements. Customers can request popular shapes such as round, oval, cushion, emerald, pear, radiant, princess and marquise, subject to manufacturing feasibility. This makes Nishal Gems suitable for both individual custom orders and B2B diamond requirements.
3. Does Nishal Gems manufacture both CVD and HPHT lab grown diamonds?
Yes, Nishal Gems offers both CVD and HPHT lab grown diamond manufacturing. Depending on your required specifications, our team can help determine the suitable production route for your custom diamond. We manufacture diamonds for different requirements across carat weights, shapes, colours and clarity grades, with certification options available for qualifying stones.
4. Can I order a single custom lab grown diamond, or is there a minimum order quantity?
Yes, Nishal Gems accepts custom lab grown diamond orders starting from a single piece, subject to the requested specifications and production feasibility. We also support wholesale and bulk requirements for jewellery manufacturers, retailers, private-label brands and international buyers. This allows customers to test a custom specification before placing larger production orders.
5. Can Nishal Gems provide certified custom lab grown diamonds for international buyers?
Yes, Nishal Gems can provide certified custom lab grown diamonds for international buyers, with certification options available through recognised gemological laboratories, depending on the diamond and certification requirement. We support B2B and wholesale requirements and can manufacture custom CVD and HPHT lab grown diamonds according to the specifications provided by international jewellery brands, wholesalers and buyers.

