Lab-Grown Diamond Engagement Ring

Light catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along the finger with quiet drama. This semi-set engagement ring foundation in 18K white gold offers a sleek, modern-minimal frame designed to highlight a 7 x 3.5 mm marquise center stone of your choosing.

Crafted with precision, the band features subtle accent settings that balance clarity with architectural structure, finished to a smooth comfort fit that sits low against the skin for everyday wear. Each piece is meticulously inspected in our Williamsburg studio to ensure flawless polish and secure prong work.

Our commitment to ethical jewelry shines through the exclusive use of lab-grown diamonds, reducing environmental impact without sacrificing brilliance or clarity.

The low-profile design suits those who appreciate refined geometry and desire a ring that layers effortlessly with wedding bands or stackable styles. Its slender silhouette complements slender to medium finger sizes, offering a confident yet understated presence.

Should you need resizing or wish to explore custom accent options, our Brooklyn studio provides personalized consultations with transparent timelines.

Visit us in Williamsburg or begin your custom design journey online to create a marquise engagement ring that reflects your unique story.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a modern aesthetic rooted in 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.