Lab-Grown Diamond Engagement Ring

Imagine the gentle elongation of a hand, where a marquise-shaped diamond begins its quiet dance with light—its tapered points drawing the eye along a slender silhouette. This semi-set engagement ring invites you to select a center stone that measures 9 by 4.5 millimeters, offering a distinctive profile that balances drama with elegance.

Crafted from 18K yellow gold, the mounting’s smooth curves and secure prongs are designed for everyday wear, resting low enough to slip comfortably beneath gloves or stack alongside other bands. The polished finish catches subtle glimmers, enhancing the diamond’s natural brilliance without overwhelming its refined shape.

Each piece reflects a commitment to sustainability through the use of lab-grown diamonds, ensuring clarity and ethical provenance without compromise. This ring suits those who appreciate a statement that is both personal and conscious, its slender form flattering a variety of hand shapes and sizes.

Should you wish to adjust the fit, resizing is handled delicately in-studio to maintain the integrity of the band’s balance and comfort. Whether you visit us in Williamsburg or explore the design process online, this semi-set offers a canvas for your unique vision.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, where expert craftsmanship and ethical values meet in every custom design.

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.

Finished for daily wear — a low-profile silhouette and polished edges help minimize snagging.