Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a 9 x 4.5 mm marquise diamond, its tapered points drawing the eye along the finger with quiet drama. This semi-set halo engagement ring in 10K yellow gold offers a refined foundation, ready to embrace a center stone of your choosing.

Crafted with a low-profile setting, the halo gently cradles the marquise shape, enhancing its signature tapered drama while maintaining a sleek profile that slips comfortably beneath gloves and daily wear. The warm glow of 10K yellow gold balances durability with a soft radiance, hand-finished in Williamsburg to exacting standards.

Each lab-grown diamond center reflects a commitment to ethical sourcing and environmental mindfulness, marrying clarity with conscience in every facet.

Designed for those who appreciate subtle statement and everyday elegance, this ring suits slender to medium finger shapes, its slender band ideal for stacking or solo wear. The semi-set format invites personal choice, allowing you to select a marquise diamond that resonates with your vision.

Resizing is straightforward, handled in-studio with care to preserve the ring’s structural integrity and finish.

Explore this semi-set halo in our Williamsburg studio or begin your custom design journey online—where craftsmanship meets intention.

Haejin Jewelry stands as a Brooklyn-based atelier specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical 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.