Lab-Grown Diamond Engagement Ring

When light catches the elongated silhouette of a marquise diamond, it creates a striking interplay of brilliance and shadow that draws the eye along the finger’s natural line. This semi-set engagement ring foundation, crafted in 18K yellow gold, awaits your choice of a 5 x 3 mm marquise center stone, designed to showcase the shape’s signature tapered drama.

The band’s low-profile setting ensures the ring sits close to the hand, minimizing snagging and enhancing comfort for daily wear. Meticulously finished with smooth edges and a subtle taper, it balances technical assurance with understated elegance, making it an ideal base for accent stones that complement without overwhelming.

Each piece is crafted in our Williamsburg studio using sustainable practices and lab-grown diamonds, reflecting a commitment to ethical jewelry that honors both beauty and responsibility.

Its slender proportions and secure mounting suit a variety of hand shapes, especially those seeking a refined, glove-friendly fit that layers well with wedding bands or stackable rings. The semi-set design invites personalization, allowing you to select a marquise diamond that resonates with your vision.

Should you need resizing or adjustments, our in-studio experts ensure a precise fit without compromising the ring’s structural integrity.

Explore this foundation in person at our Williamsburg studio or begin your custom design journey online, where expert guidance meets thoughtful craftsmanship.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing 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.