Sunlight catches the elongated marquise diamond, casting a slender, dramatic gleam that stretches across the finger. This 7 x 3.5 mm center stone is nestled securely in a 14K yellow gold setting designed for everyday grace and resilience.

The ring’s low-profile mounting keeps the diamond close to the hand, minimizing snagging while maintaining a confident presence. Each accent stone is precisely set to enhance the marquise’s tapered points, balanced by a smooth comfort-fit band that feels natural from morning coffee to evening walks in Williamsburg.

Crafted in our Brooklyn studio, the lab-grown diamond offers a clarity and brilliance indistinguishable from mined stones, with a fraction of the environmental impact. This ethical choice aligns with a modern commitment to sustainability without compromising on radiance.

Its slender silhouette suits hands that appreciate refined geometry and a ring that layers effortlessly with wedding bands or stackable rings. The secure setting and durable gold ensure it withstands daily wear, while the shape visually elongates the finger for a graceful effect.

Should you need a custom adjustment, resizing is straightforward and handled with care in-studio to preserve the ring’s integrity.

Explore this marquise lab-grown diamond engagement ring in person at our Williamsburg studio or begin your custom design journey online—crafted for life’s moments, made in Brooklyn.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, combining expert craftsmanship with ethical sourcing and a dedication to thoughtful, wearable design.

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.