Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of a marquise diamond, casting a slender, graceful shadow across the hand. This semi-set solitaire ring invites you to select a 10 x 5 mm marquise center stone, its distinctive shape evoking a refined balance of drama and elegance.

Crafted from warm 18K yellow gold, the band is hand-finished in our Williamsburg studio with a subtle comfort fit that rests lightly against the skin. The low-profile setting ensures everyday wearability without sacrificing the diamond’s striking silhouette, while the artisan’s attention to detail is evident in the precise prong work designed to cradle the stone securely.

Each lab-grown diamond option offers exceptional clarity and brilliance, reflecting our commitment to ethical jewelry that honors both beauty and sustainability.

This solitaire suits those who appreciate a statement piece that elongates the finger and pairs effortlessly with stacking bands or a wedding ring. Its slender proportions and smooth finish make it glove-friendly and comfortable for daily life.

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

Discover the possibilities of this marquise semi-set by visiting our Williamsburg workshop or designing online—where expert guidance meets thoughtful craftsmanship.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending ethical craftsmanship with local artisan expertise 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.