Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, dramatic shadow that dances across the hand. This semi-set engagement ring invites you to select a 9 x 4.5 mm marquise stone, whose tapered points and brilliant facets create a striking visual elongation.

Crafted from 18K white gold, the mounting features delicate accent settings that frame the center stone with subtle artistry. The band’s smooth finish and low-profile design ensure comfortable daily wear while allowing light to flood the diamond’s surface. Each piece is meticulously hand-finished in our Williamsburg studio, where precision meets quiet elegance.

Our commitment to sustainability is reflected in the use of lab-grown diamonds, offering clarity and brilliance with a lighter environmental footprint.

Designed for those who appreciate refined craftsmanship and a statement silhouette, this ring complements slender fingers and pairs effortlessly with stackable bands or wedding rings. Its modest height makes it glove-friendly and ideal for everyday life.

Should you need resizing or prefer a custom accent arrangement, our Brooklyn studio offers personalized consultations to tailor your ring with care and expertise.

Explore this semi-set marquise engagement ring in person at our Williamsburg workshop or begin your custom design journey online, where thoughtful craftsmanship meets modern romance.

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