Lab-Grown Diamond Engagement Ring

When light catches the 9 x 9 mm heart-shaped diamond at the center, it pulses with a quiet, intimate glow—like a whispered promise held close. This platinum halo setting cradles the gem with delicate precision, surrounding it with a ring of smaller stones that amplify its soft brilliance without overwhelming the design.

Crafted in Williamsburg, the band’s polished platinum offers a cool, substantial feel against the skin, shaped for comfort and everyday wear. The low-profile halo keeps the silhouette refined and glove-friendly, while the secure prong setting ensures the diamond remains poised through daily moments.

Each lab-grown diamond is chosen for clarity and ethical origin, reflecting a commitment to sustainability without compromise on radiance. The heart shape’s tender curves suit those who favor romantic symbolism with modern craftsmanship, especially on slender to medium fingers where the design can truly sing.

Resizing is available to ensure a seamless fit, and the ring arrives fully set, ready to mark a meaningful chapter. Whether explored in our Williamsburg studio or designed online, this engagement ring invites a thoughtful, pressure-free experience.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical values and a deep connection to 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.