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.
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
Manufacturing Capability
In-house cutting and CAD expertise to deliver custom shapes and specifications with consistent quality.
Verified Before You Buy
Every diamond is carefully checked for quality, specifications, and accuracy before dispatch.
Transparent Pricing
Clear, competitive pricing with complete product details so you can buy with confidence.
The Surat Advantage
Access Surat’s trusted diamond manufacturing ecosystem for faster production, flexibility, and direct sourcing.
Our Story
OCS Diamond has manufactured lab grown diamonds from our Surat facility since 2018. As GJEPC and Surat Diamond Bourse members, we’ve grown to serve 50+ retailers, wholesalers, and designers across India, the USA, the UK, Europe, the Middle East, and Australia — built on the same standard we apply to every stone we sell: independently certified, internally reviewed, and verifiable before you buy.
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 all in one place.
Operating from Surat means OCS Diamond isn’t adjacent to the industry — we’re inside it. As GJEPC and Surat Diamond Bourse members, we’re connected to the same trade infrastructure, certification labs, and skilled workforce that make this city the center of global diamond manufacturing.