Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a subtle sparkle that draws the eye along its tapered points. This semi-set solitaire ring offers a refined foundation in warm 18K rose gold, designed to cradle a 10 x 5 mm marquise stone with precision and grace.

The band’s low-profile setting ensures the diamond sits close to the finger, balancing presence with everyday comfort. Expertly crafted in Williamsburg, the smooth rose gold shank is polished to a soft sheen, its gentle curve shaped for a secure, comfortable fit that suits active hands and delicate stacking alike.

Each lab-grown diamond chosen for this setting reflects a commitment to ethical sourcing and sustainability, offering clarity and brilliance without compromise. The marquise cut’s distinctive, elongated form enhances finger length, making it a striking choice for those who appreciate architectural elegance with a modern edge.

Designed for daily wear, this mounting adapts well to resizing and is compatible with a variety of complementary bands, allowing for personalized styling over time. Lead times for custom setting are communicated clearly to ensure a seamless design experience.

Explore this semi-set marquise solitaire in our Williamsburg studio or begin your custom design journey online—where expert guidance meets thoughtful craftsmanship.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending ethical craftsmanship with local expertise to create pieces made for a lifetime.

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.