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 foundation in warm 18K yellow gold invites your choice of a 12 x 6 mm marquise center, ready to become a luminous focal point.

Handcrafted in our Williamsburg studio, the band is meticulously shaped for a comfortable fit, its low-profile halo setting designed to enhance brilliance without overwhelming daily wear. Each curve and prong is polished to a soft gleam, reflecting the artisan’s careful attention to detail.

Our commitment to sustainability is reflected in the lab-grown diamond clarity this ring embraces—ethical origins paired with enduring beauty.

The slender band suits those who appreciate subtle elegance, offering a balance between statement and wearability. Its design complements slender fingers and layers effortlessly with other stackable bands, while the low profile ensures glove-friendly comfort.

Should you need resizing or prefer a custom finish, our Brooklyn studio welcomes consultations to tailor this piece precisely to your hand.

Explore this semi-set marquise halo in person at our Williamsburg workshop or begin your custom design journey online, where expert guidance meets thoughtful craftsmanship.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending ethical craftsmanship with local artisan expertise to create pieces made for daily life and lasting connection.

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.