Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, dramatic shadow across the hand. This semi-set three-stone engagement ring in 18K rose gold frames a 12 x 6 mm center stone with delicate side accents, sculpted by hand in our Williamsburg studio.

The warm blush of rose gold complements the marquise’s tapered points, while the low-profile setting ensures a comfortable fit for daily wear. Each prong is meticulously finished to cradle the stone securely, balancing light reflection with subtlety. The band’s smooth interior offers a gentle comfort fit, ideal for stacking or solo elegance.

Crafted with lab-grown diamonds, this ring honors sustainability without compromising brilliance or clarity. The ethical origin of the stones aligns with a modern commitment to responsible luxury.

Its elongated shape flatters slender fingers and adds a refined edge to classic three-stone styling. The semi-set design invites you to select a center diamond that reflects your personal story, with expert guidance available for sizing and stone choice.

Resizing is straightforward, handled with care in our Brooklyn workshop to preserve the ring’s integrity and finish.

Visit our Williamsburg studio to explore this design in person or begin your custom journey online—where craftsmanship meets conscious beauty.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, combining expert craftsmanship with ethical sourcing and a local 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.