Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of a marquise diamond, casting a slender, dramatic silhouette across the hand. This semi-set solitaire invites you to select a center stone that measures a commanding 12 by 6 millimeters, its shape lending a graceful elongation to fingers.

Crafted in warm 18K rose gold, the mounting is designed with a low-profile setting that keeps the diamond close to the skin, minimizing snagging and maximizing comfort for everyday wear. The band’s subtle taper and smooth finish ensure a secure fit without bulk, ideal for stacking or wearing solo.

Each piece is meticulously finished in our Williamsburg studio, where expert hands polish and inspect every curve to meet exacting standards. The rose gold’s gentle blush complements the marquise’s vintage-inspired geometry, marrying modern precision with a soft glow.

Our commitment to sustainability shines through the lab-grown diamond option, offering clarity and brilliance without compromise. This ethical choice aligns with a mindful approach to fine jewelry, crafted for a lifetime.

Designed for those who appreciate architectural elegance paired with practical wearability, this mounting suits slender to medium finger sizes and pairs well with delicate bands. Its low profile fits comfortably under gloves and daily activities alike.

Should you wish to adjust sizing or explore stone options, our studio offers personalized consultations with transparent timelines and care guidance.

Visit us in Williamsburg or begin your custom design journey online to bring this marquise solitaire to life. Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, combining expert craftsmanship with ethical materials and a distinctly local sensibility.

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.