Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along the finger with subtle drama. This semi-set halo engagement ring invites you to select a 6 x 3.5 mm lab-grown marquise, known for its graceful, vintage-inspired profile that elongates the hand.

Crafted from 18K palladium white gold, the band offers a cool, luminous backdrop that complements the diamond’s brilliance without overwhelming it. The artisan finish is smooth to the touch, with a low-profile halo setting designed for everyday wear—comfortable beneath gloves and stackable alongside other bands. Each piece is meticulously inspected in our Williamsburg studio to ensure a refined balance between sparkle and practicality.

Our commitment to ethical jewelry shines through the use of lab-grown diamonds, combining sustainability with exceptional clarity and color. This ring suits those who appreciate architectural elegance paired with modern responsibility.

Should you need resizing or prefer a custom halo design, our Brooklyn studio welcomes your ideas with a pressure-free approach and expert guidance. Typical lead times are communicated clearly to keep your experience seamless.

Explore this semi-set marquise halo in person at our Williamsburg workshop or begin your custom design journey online—where craftsmanship meets conscious choice.

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