Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, graceful shadow across the hand. This semi-set solitaire ring invites you to select a center stone that balances bold presence with refined elegance.

Crafted in warm 18K rose gold, the mounting features a low-profile setting designed for everyday wear. Its streamlined prongs hold the stone securely while allowing light to flood the facets, enhancing the marquise’s signature tapered drama. The band’s subtle comfort fit ensures it sits naturally, whether worn solo or stacked.

Each piece reflects Haejin Jewelry’s commitment to sustainability, showcasing lab-grown diamonds that offer clarity and brilliance with a lighter environmental footprint.

Ideal for those who appreciate architectural lines and a ring that complements an active lifestyle, this mounting suits a 12 x 6 mm marquise stone, emphasizing hand elongation without excess bulk. Its modest height slips easily beneath gloves or sleeves.

Resizing is available to ensure a precise fit, crafted with care in our Williamsburg studio.

Explore this semi-set solitaire in person or begin your custom design journey online—where Brooklyn craftsmanship meets thoughtful, ethical jewelry.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with sustainable practices and a local, personalized design experience.

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.