Lab-Grown Diamond Engagement Ring

When light catches the 9 x 9 mm heart-shaped diamond, it unfolds like a quiet breath—soft curves meeting sharp clarity in a moment suspended between pulse and promise. This solitaire semi-set invites your own center stone, poised to become the heart of a story uniquely yours.

Crafted in a fixed two-tone blend of 18k yellow and 18k yellow and platinum and 18k yellow and platinum, the band balances warmth and coolness with a subtle contrast that frames the diamond’s silhouette. The low-profile setting ensures the ring sits comfortably for daily wear, while the smooth finish reflects the meticulous handwork of our Williamsburg studio artisans.

Each lab-grown diamond embodies a commitment to ethical clarity and sustainability, offering brilliance without compromise. The heart shape’s romantic geometry suits those who cherish symbolic expression, elongating the finger with its tender taper and inviting gentle glances.

Designed for ease, this semi-set can be resized to fit your hand perfectly, and its streamlined form pairs effortlessly with wedding bands or stackable rings. Whether worn alone or layered, it carries a quiet confidence that moves beyond trend.

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

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending ethical craftsmanship with local artistry to create pieces made for a lifetime.

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.