Lab-Grown Diamond Engagement Ring

When light catches the elongated silhouette of a marquise diamond, it traces a delicate arc reminiscent of whispered promises. This semi-set halo ring invites you to envision a center stone measuring 7 by 3.5 millimeters, poised to amplify its graceful taper with a ring of shimmering accents.

Crafted in cool, enduring platinum, the mounting balances strength with subtlety, its low-profile halo setting designed to sit comfortably against the skin. Each detail is refined in our Williamsburg studio—hand-finished and inspected to ensure the band’s smooth comfort fit and the halo’s precise symmetry.

Choosing a lab-grown diamond here reflects a quiet commitment to sustainability, offering clarity and brilliance without compromise. The marquise shape, with its tapered points, naturally elongates the finger, making it an elegant choice for those who appreciate a refined yet distinctive silhouette.

This ring’s design suits a wearer who values daily elegance—its halo setting adds sparkle without height, making it glove-friendly and ideal for stacking alongside other bands. The semi-set nature allows you to select a center stone that speaks personally, ensuring a truly bespoke expression.

Should you need resizing or guidance on stone selection, our Brooklyn studio offers expert advice with thoughtful care and reasonable lead times.

We invite you to explore this design in person or begin your custom journey online, where craftsmanship and personal connection meet in the heart of Williamsburg.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending ethical craftsmanship with expert design rooted in New York City’s creative spirit.

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.