Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its pointed ends tracing a delicate arc across the finger. This semi-set halo engagement ring in 18K rose gold frames a 12 x 6 mm marquise center with a subtle glow, balancing architectural drama and refined softness.

Crafted in Williamsburg, the band’s low-profile setting ensures the ring sits close to the hand, easing daily wear without sacrificing brilliance. The halo of smaller stones enhances the marquise’s signature tapered drama, while the smooth rose gold shank offers a warm, comfortable fit that complements stacking or solo wear.

Each piece is meticulously finished and inspected in-studio, reflecting a commitment to precision and enduring craftsmanship. The lab-grown diamond at its heart embodies clarity and sustainability, chosen for ethical impact without compromise on radiance.

Designed for those who appreciate a blend of bold geometry and subtle elegance, this ring suits slender to medium finger shapes, its length elongating the hand gracefully. Its profile is glove-friendly and practical for everyday life.

Resizing is available to ensure a perfect fit, with typical lead times reflecting careful handcrafting.

Explore this design in our Williamsburg studio or start your custom journey online—where thoughtful design meets Brooklyn’s artisanal spirit.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and local authenticity.

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.