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 foundation in warm 14K yellow gold awaits your choice of center stone, designed to cradle a 6 x 3.5 mm marquise with precision.

Each band is hand-shaped in our Williamsburg studio, the yellow gold polished to a soft gleam that complements the diamond’s fiery sparkle. The three-stone setting balances architectural elegance with everyday wearability, featuring a low-profile design that rests comfortably against the finger without catching.

Crafted with lab-grown diamonds in mind, this ring carries a quiet commitment to sustainability and clarity, reflecting a modern approach to ethical jewelry.

Its slender shank and subtle prongs make it ideal for stacking or wearing solo, especially suited to hands that appreciate refined geometry and a touch of vintage-inspired drama. The semi-set style allows you to select a marquise cut that resonates personally, ensuring a truly custom expression.

Should you need resizing or guidance on selecting the perfect center stone, our Brooklyn studio offers expert advice with a relaxed, pressure-free approach.

Explore this semi-set three-stone marquise ring in person at our Williamsburg workshop or begin your custom design journey online. Haejin Jewelry brings expert craftsmanship and ethical clarity to lab-grown diamond engagement rings, rooted in the creative heart of Brooklyn.

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.