Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along a graceful arc. This semi-set halo ring invites your choice of a 12 x 6 mm center stone, framed by a delicate halo that amplifies its sculptural presence.

Crafted from warm 10K yellow gold, the band is shaped and polished in our Williamsburg studio, where each curve is refined for a smooth, comfortable fit. The halo setting is designed low to the finger, balancing visibility with everyday wearability, while the artisan finish reveals subtle handwork in every detail.

Our commitment to lab-grown diamonds ensures clarity and brilliance without compromise, reflecting a sustainable approach to fine jewelry. This ring’s silhouette suits those who appreciate bold geometry softened by intricate craftsmanship, ideal for hands that favor statement pieces with a refined profile.

Because the center stone is selected separately, you can tailor the ring to your vision, with resizing available to ensure a perfect fit. Whether layered with other bands or worn alone, its design remains striking yet versatile.

Visit our Williamsburg studio to explore this halo marquise semi-set in person or begin your custom design journey online. Haejin Jewelry blends expert craftsmanship with ethical materials, creating lab-grown diamond engagement rings that resonate with Brooklyn’s creative spirit and your personal story.

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.