Lab-Grown Diamond Engagement Ring

Light catches the elongated points of the marquise diamond, casting a slender, elegant shadow across the hand. This semi-set solitaire ring features a 6 x 3 mm marquise center, poised to showcase your chosen stone with architectural grace.

Crafted from 18K white gold, the mounting offers a low-profile silhouette designed for everyday wear. The streamlined setting secures the diamond while maintaining a comfort fit that slides easily beneath gloves or rings stacked alongside it. Each piece is meticulously finished in our Williamsburg studio, ensuring smooth edges and a polished surface that reflects subtle Brooklyn craftsmanship.

Our commitment to lab-grown diamonds means your ring carries a clarity and brilliance born from sustainable practices, aligning beauty with conscience.

Ideal for those who appreciate refined geometry and a ring that balances presence with practicality, this setting complements slender fingers and adapts well to various stone sizes close to the 6 x 3 mm range.

Should you need resizing or prefer a custom adjustment, our in-studio team is ready to assist with care and precision.

Explore this semi-set marquise solitaire in person at our Williamsburg studio or begin your custom design journey online—crafted for your life, made in Brooklyn.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and local authenticity.

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.