Lab-Grown Diamond Engagement Ring

When light catches the elongated silhouette of a marquise diamond, it creates a striking interplay of brilliance and shadow, evoking a sense of tapered drama that elongates the finger. This semi-set halo engagement ring foundation in polished platinum offers a refined stage for a 6 x 3 mm marquise center stone, framed by a delicate halo that enhances its fiery sparkle without overwhelming the design.

Handcrafted in our Williamsburg studio, the platinum band is meticulously finished for a smooth, comfort fit that sits low against the hand, ideal for everyday wear. The halo setting is designed to protect the pointed ends of the marquise while adding a subtle vintage-inspired flourish, all inspected for precision before leaving the bench.

Our commitment to ethical jewelry is reflected in the exclusive use of lab-grown diamonds, ensuring clarity and sustainability without compromise. This mounting suits those who appreciate a balance of bold geometry and delicate detail, especially flattering on slender fingers and perfect for stacking with slim bands or wedding rings.

Should you wish to customize the center stone or inquire about resizing, our Brooklyn studio offers a pressure-free consultation to guide you through every detail. The semi-set nature invites you to select a marquise diamond that resonates personally, making this ring truly your own.

Explore this halo semi-set in person at our Williamsburg workshop or begin your custom design journey online with Haejin Jewelry, where expert craftsmanship meets ethical innovation in the heart of Brooklyn.

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.