Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along a graceful arc. This semi-set three-stone ring in 18K rose gold offers a warm, subtle glow that complements the diamond’s dramatic shape without overpowering it.

Each band is hand-forged in our Williamsburg studio, finished with a soft comfort fit that rests lightly on the finger. The setting’s low profile ensures everyday wearability while the artisan’s attention to detail reveals itself in the delicate prongs cradling the center stone, ready to showcase your chosen 9 x 4.5 mm marquise diamond.

Crafted exclusively with lab-grown diamonds, this piece reflects a commitment to ethical jewelry—minimizing environmental impact without sacrificing brilliance or clarity.

Its slender silhouette suits hands that appreciate refined geometry and works beautifully alongside stacking bands or a wedding ring. The rose gold’s gentle blush enhances the marquise’s vintage-inspired elegance, making it a thoughtful choice for those seeking a blend of modern design and classic form.

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

Discover the possibilities of custom design in Brooklyn by visiting us in Williamsburg or starting your journey 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 values in every piece we create.

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.