Lab-Grown Diamond Engagement Ring

Light catches the elongated marquise shape, casting a subtle sparkle that draws the eye along its tapered points. This semi-set engagement ring frame awaits your choice of a 9 x 4.5 mm marquise diamond, designed to showcase the stone’s distinctive silhouette with minimal distraction.

Crafted in 18K white gold, the mounting features delicate accent settings that enhance brilliance without adding bulk. Its low-profile design ensures the ring sits close to the finger, balancing elegance with everyday practicality. The smooth band contours comfortably, making it suitable for daily wear and easy layering.

Each piece is meticulously finished in our Williamsburg studio, where precision meets quiet refinement. The ethical advantage of lab-grown diamonds complements the thoughtful craftsmanship, reflecting a commitment to sustainability without compromise.

Ideal for those who appreciate architectural grace and a refined hand feel, this setting pairs well with slender fingers or as part of a stack. Its streamlined silhouette slips effortlessly under gloves or sleeves, marrying form with function.

Should you need resizing or prefer a custom accent arrangement, our Brooklyn studio offers personalized consultations to ensure a perfect fit and finish.

Explore this semi-set marquise engagement ring in person or begin your custom design journey online—each step guided by expert care and Brooklyn authenticity.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, where ethical craftsmanship and local expertise shape every creation.

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.