Lab-Grown Diamond Engagement Ring

Imagine the subtle drama of a marquise diamond, its elongated silhouette catching light with a quiet intensity that draws the eye along the finger. This semi-set halo ring foundation in 18K white gold offers a refined canvas for a 9 x 4.5 mm marquise center, designed to amplify the stone’s graceful taper and vintage-inspired allure.

Crafted in our Williamsburg studio, the band is meticulously hand-finished to a smooth comfort fit, ensuring it sits low and secure for daily wear. The halo setting, ready to embrace your chosen diamond, features delicate prongs that balance protection with maximum brilliance, reflecting our artisan approach to fine jewelry.

Each piece reflects our commitment to sustainability, showcasing lab-grown diamonds that offer clarity and sparkle with a reduced environmental footprint. This ring’s streamlined profile suits those who appreciate elegance without excess, pairing effortlessly with stackable bands or worn solo for understated sophistication.

Should you need resizing or prefer a custom adjustment, our Brooklyn studio welcomes you to a pressure-free consultation, where every detail is tailored to your hand and lifestyle. Lead times are transparent and designed around your schedule.

Explore this semi-set marquise halo in person or begin your custom design journey online—either way, you’re invited to experience the thoughtful craftsmanship that defines Haejin Jewelry.

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 artistry in 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.

Finished for daily wear — a low-profile silhouette and polished edges help minimize snagging.