Lab-Grown Diamond Engagement Ring

The elongated silhouette of the marquise diamond stretches gracefully across the finger, its 12 x 6 mm size commanding attention with a refined, tapered drama. This semi-set engagement ring foundation in warm 18K rose gold offers a delicate contrast to the stone you choose, framed by artisan-crafted accents that catch light with subtle flickers.

Each band is hand-forged in our Williamsburg studio, polished to a soft sheen that feels smooth against the skin. The low-profile setting ensures daily wearability without catching, while the rose gold’s gentle blush complements a variety of skin tones. Accents are meticulously set to enhance the center stone’s brilliance without overpowering its shape.

Our commitment to sustainability is reflected in the exclusive use of lab-grown diamonds, offering clarity and sparkle with a lighter environmental footprint.

Designed for those who appreciate a balance of bold geometry and understated elegance, this ring suits slender to medium finger sizes and pairs beautifully with stackable bands or a simple wedding band. Its comfort fit and modest height make it glove-friendly and ideal for everyday life.

Should you need resizing or prefer a custom accent arrangement, our Brooklyn studio welcomes your ideas with expert guidance and a pressure-free process.

Explore this semi-set marquise ring in person at our Williamsburg workshop or begin your custom design journey online, where craftsmanship meets conscious luxury.

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 deep connection to New York City’s artisan 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.