About OCS Diamond
Manufacturing certified lab grown diamonds from Surat since 2018.
Ocean Star Diamonds is a Surat-based lab grown diamond manufacturer and global supplier, serving diamond retailers, manufacturers, and sourcing professionals. We focus on precision cutting, consistent grading, and dependable supply partnerships designed to support long-term business growth.
Our Story
OCS Diamond has been manufacturing lab grown diamonds at our Surat facility since 2018. What started with a focus on precision manufacturing has grown into a global supply business serving 50+ retailers, wholesalers, and designers across India, the USA, the UK, Europe, the Middle East, and Australia.
Our approach remains consistent as we grow: every stone is reviewed internally, its certification and details are made available for verification, and every order is checked by our team before confirmation.
Why Surat
The Surat Advantage
Surat processes roughly 90% of the world’s natural diamonds and around 25% of lab-grown diamonds globally, across nearly 6,000 cutting and polishing units in the city. It didn’t become the world’s diamond capital by accident — decades of skilled labor, continuous investment in cutting technology, and a dense ecosystem of manufacturers, traders, and certification infrastructure have made Surat a global center for diamond manufacturing.
Operating from Surat means OCS Diamond is directly within this established manufacturing ecosystem. Our location gives us access to experienced diamond professionals, advanced cutting capabilities, trade infrastructure, and certification services — all within one of the world’s most established diamond manufacturing hubs.
OUT COMMITMENT
What We Commit To On Every Order
IGI certification on every stone, with an internal gemology review before listing.
Certificate and video linked to every listing, with live video verification available before you pay.
Live inventory refreshed every 2 days, so you’re working with current availability rather than a static catalog.
Every order personally reviewed by our team before confirmation, regardless of order size.
Full transparency on color origin, with natural or treated color clearly stated for each stone.
Our Facility
Diamond Cutting
Precision cutting focused on proportions, symmetry, and brilliance.
Diamond Polishing
Careful polishing that brings out the diamond’s clarity and brilliance.
Diamond Quality Inspection
Detailed inspection at every stage to maintain consistent quality.
Advanced Diamond Technology
Modern technology supporting precision, consistency, and efficiency.
Certifications & Memberships
GJEPC Member
Surat Diamond Bourse Member
Any additional trade body memberships
Our Approach as a Lab Grown Diamond Manufacturer
As a reliable lab grown diamond manufacturer, our approach to wholesale loose diamond partnerships is built on clarity, consistency, and long-term value. We collaborate with retailers and industry professionals who prioritize sustainable growth over short-term transactions.
This approach reflects our role as a moissanite and lab grown diamond manufacturer focused on building scalable, long-term B2B partnerships rather than transactional trading.
Transparency at Every Step
From pricing and technical specifications to certification details and delivery timelines, we maintain complete transparency to build trust and ensure confident decision-making for our partners.
Consistent Quality & Supply
Our strict grading standards and quality control processes ensure uniformity across every order, helping businesses maintain product consistency, brand credibility, and customer satisfaction.
Focused on Long-Term Growth
We structure our wholesale supply model to scale with your business – adapting sourcing, volume, and operational support as your market demand evolves.
Curated Stock Selection
Hand-picked inventory tailored to your specific market demographics and price points.
Bespoke Custom Requests
Access our global sourcing network for unique cuts and rare stone requirements.
Dedicated Support for Our Wholesale Partners
Certification & Ethics Guidance
Expert navigation through GIA/IGI standards and conflict-free diamond protocols.
Precision Delivery Planning
Secure, fully-insured logistics designed to keep your display cases consistently stocked.
A diamond partnership that scales with you
From independent boutiques to national chains, our goal is to evolve alongside your business ambitions.
Global Supply by a Lab Grown Manufacturer
At Ocean Star Diamonds, we bridge the gap between India’s legendary craftsmanship and the global market. Our robust infrastructure supports partners across domestic and international territories with ironclad reliability.
Secure Packaging
Multi-layered, tamper-proof transit solutions for high-value assets.
Export-Ready
Full compliance with international diamond trade and customs regulations.
Bulk Planning
Scalable logistics designed for wholesalers and large retail chains.
Reliable Timelines
Precision-tracked dispatch schedules you can build your business on.