Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated marquise diamond, its tapered points drawing the eye along a delicate halo of platinum that amplifies every facet’s fire. This engagement ring balances architectural elegance with everyday grace, crafted to sit low against the finger for seamless wear.

Set in polished platinum, the halo setting frames a 7 by 3.5 mm marquise lab-grown diamond, known for its dramatic silhouette and slender elongation that visually lengthens the hand. The band’s subtle profile and smooth finish ensure comfort beneath gloves or alongside stackable rings, making it a versatile choice for daily life.

Each ring is meticulously finished in our Williamsburg studio, where expert hands inspect every detail to ensure a secure, low-profile setting that resists snagging. The platinum’s natural strength complements the diamond’s clarity, offering durability without bulk.

Lab-grown for ethical clarity and sustainability, this ring reflects a commitment to responsible luxury without compromise.

Designed for those who appreciate refined geometry and understated presence, it suits slender to medium finger sizes and pairs effortlessly with wedding bands or delicate accessories.

Should you need resizing or prefer a custom consultation, our Brooklyn studio welcomes you to explore options with no pressure and full transparency.

Discover the thoughtful craftsmanship behind this marquise halo ring by visiting us in Williamsburg or designing your own online. Haejin Jewelry is proud to be a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, where ethical craftsmanship meets expert design in the heart of New York City.

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.