Lab-Grown Diamonds · IGI Certified
Brilliance,redefined.
Where scientific precision meets timeless artistry. Discover diamonds that are ethically grown, IGI certified, and infinitely brilliant.
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Where scientific precision meets timeless artistry. Discover diamonds that are ethically grown, IGI certified, and infinitely brilliant.
From timeless rings to vibrant color diamonds — discover the piece that speaks to you.
Every D&J diamond is cut to return the maximum fire — a precision you feel before you understand it.
Explore the Collection
Every D&J diamond begins as a vision of perfection. Grown in our laboratories under exacting conditions, each stone is cut to maximize fire, brilliance, and scintillation — the three qualities that define a truly exceptional diamond.
Explore Our DiamondsExplore our curated selection of the season's most coveted designs.
From classic solitaires to elaborate halo designs, each piece in our collection is crafted to celebrate life's most precious moments.
Browse All DiamondsOur master jewelers combine traditional craftsmanship with modern technology. Every diamond is hand-selected, every setting meticulously crafted to ensure a lifetime of beauty.
Learn the 4 Cs
The most critical factor. A precise cut maximizes light return, creating the diamond's signature sparkle and fire.
Graded D (colorless) to Z (light yellow). The less color, the rarer and more valuable the diamond.
Measures natural inclusions and blemishes. FL (flawless) is the highest grade, exceptionally rare.
The weight of the diamond. One carat equals 200 milligrams. Larger stones are increasingly rare.
A diamond's cut is the most critical factor in its beauty. Our precision cutting unlocks the full potential of every stone.
A diamond is forever — but its beauty begins with the courage to create.
We specialize in providing high-quality lab-grown diamonds and fine jewelry to customers worldwide, while also offering wholesale loose diamonds for jewelry brands, retailers, designers, and distributors.
Our lab-grown diamonds are sourced from Henan Liliang Diamond Co., Ltd. (Shenzhen Stock Exchange: 301071), one of China's leading manufacturers of lab-grown diamonds and superhard materials. Produced using advanced technology, these diamonds possess the same chemical composition, crystal structure, and physical properties as natural diamonds. IGI certification is available for eligible stones.
We are committed to consistent quality, reliable supply, competitive pricing, and professional customer service. Whether you are sourcing loose diamonds or seeking custom jewelry solutions, we strive to be your trusted long-term business partner.
D&J Diamond Inc. is the officially authorized dealer of Henan Liliang Diamond Co., Ltd. — a publicly traded company on the Shenzhen Stock Exchange.
Every diamond graded by the International Gemological Institute.
Ethically lab-grown. 100% conflict-free and environmentally responsible.
90% less environmental impact compared to traditional mining.
Schedule a private consultation with our diamond specialists or explore our collection online.
