Lab-Grown Diamond Engagement Ring

Sunlight catches the gentle curve of an oval diamond, its elongated silhouette casting a subtle glow across the hand. This three-stone semi-set ring invites you to select a 6 x 4 mm oval center, known for its graceful elongation that visually lengthens the finger with a soft, luminous presence.

Crafted in cool, enduring platinum, the mounting features a delicate three-stone setting that balances architectural precision with artisanal warmth. Each prong is hand-finished in our Williamsburg studio, ensuring a secure yet low-profile embrace that sits comfortably for daily wear. The band’s smooth contour offers a comfort fit, ideal for stacking or wearing solo without interruption.

Our commitment to ethical jewelry shines through the choice of lab-grown diamonds, offering clarity and brilliance with a lighter environmental footprint. This ring’s design suits those who appreciate subtle drama and refined craftsmanship, especially hands that favor slender, elegant shapes.

Should you wish to adjust the fit, resizing is handled expertly in-house, preserving the integrity of the platinum and setting. Lead times reflect our bespoke approach, with each piece made to order in Brooklyn’s artisan community.

Explore this semi-set oval engagement ring in person at our Williamsburg studio or begin your custom design journey online—crafted for those who value intentional beauty and ethical origins.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, where expert craftsmanship and sustainable practices converge in every piece we create.

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.