Lab-Grown Diamond Engagement Ring

Imagine the elongated silhouette of a marquise diamond catching the light as you move your hand—its tapered points lending a subtle drama that feels both bold and refined. This semi-set solitaire ring offers a 12 x 6 mm marquise center stone, ready to be chosen and set into a 10K white gold band shaped for everyday grace.

Crafted in our Williamsburg studio, the band is meticulously hand-finished with a smooth comfort fit that rests lightly against the skin. The low-profile setting ensures the diamond sits close to the finger, making it ideal for stacking or wearing alongside a wedding band without catching on fabric.

Each lab-grown diamond reflects a commitment to sustainability, offering clarity and brilliance without the environmental cost of traditional mining. This ethical choice aligns with a modern approach to fine jewelry—beautiful, conscientious, and made to last.

The slender white gold band complements the marquise’s architectural shape, flattering longer fingers and adding a touch of vintage-inspired elegance to a contemporary design. Its semi-set state invites you to select a center stone that speaks to your personal story, allowing for a truly bespoke experience.

Should you need resizing or prefer a different finish, our Brooklyn studio offers personalized consultations to ensure your ring fits comfortably and reflects your vision.

Visit us in Williamsburg or explore our custom design process online to begin crafting a ring that balances artistry with everyday wearability. Haejin Jewelry is proud to be a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, where ethical craftsmanship meets expert design in the heart of New York City.

See how your design comes to life with our Ring Design Online, or start a truly custom piece from scratch in our Williamsburg studio.

Explore our Guides & Education and Stories & Lifestyle for diamond education, care tips, and real studio stories.