Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender beam that dances along the finger. This semi-set halo ring invites you to choose a 9 x 4.5 mm marquise stone, its tapered shape lending a graceful drama that elongates the hand.

Crafted from warm 18K yellow gold, the band is shaped and polished in our Williamsburg studio to a smooth comfort fit, designed for everyday wear. The halo setting, meticulously hand-set by our artisans, enhances the center stone’s brilliance while maintaining a low profile that slips easily beneath gloves or sleeves.

Each piece reflects our commitment to sustainability, featuring a lab-grown diamond that offers exceptional clarity and ethical provenance without compromise.

Ideal for those who appreciate refined geometry and subtle statement, this ring balances boldness with wearability. Its slender band and halo detail make it stackable alongside wedding bands or other fine jewelry.

Should you need resizing or prefer a custom consultation, our Brooklyn studio welcomes you to explore options with no pressure and full transparency.

Discover the possibilities of this marquise halo semi-set in 18K yellow gold by visiting our Williamsburg workshop or designing online. Haejin Jewelry is proud to be a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, where expert craftsmanship meets ethical design in every piece.

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.