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 three-stone engagement ring invites your choice of a 7 x 3.5 mm center stone, framed by two delicately crafted side gems that enhance its architectural grace.

Hand-forged in 18K white gold, the band is polished to a soft sheen that complements the diamond’s sharp geometry without overwhelming it. The setting sits low enough for everyday wear, balancing presence with comfort, while the three-stone design offers a subtle narrative of past, present, and future.

Each piece is finished and inspected in our Williamsburg studio, where artisan techniques meet modern precision. The lab-grown diamond you select will carry the clarity and brilliance of sustainable creation, reflecting a commitment to ethical jewelry without compromise.

Designed for those who appreciate refined structure and understated elegance, this ring fits comfortably beneath gloves and pairs effortlessly with stackable bands. Its slender profile suits a variety of hand shapes, especially elongating fingers with its tapered marquise form.

Should you need resizing, our in-studio experts ensure a seamless adjustment without disrupting the ring’s balance or finish.

Visit us in Williamsburg or begin your custom design journey online to bring this distinctive three-stone marquise ring to life.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, where expert craftsmanship and ethical sourcing converge 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.