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 engagement ring foundation in warm 14K yellow gold invites your choice of a 12 x 6 mm marquise center, ready to become a singular statement.

Each band is hand-shaped in our Williamsburg studio, the yellow gold polished to a soft glow that complements the diamond’s fiery brilliance. Accents nestle close to the center, crafted with precision to enhance sparkle without overwhelming the ring’s elegant profile. The low-set design ensures comfort for daily wear, slipping easily beneath gloves or alongside stackable bands.

Our diamonds are lab-grown, offering clarity and fire with a lighter environmental footprint, reflecting a commitment to ethical jewelry without compromise.

This ring suits those who appreciate architectural drama balanced by artisan subtlety—its slender form elongates the finger while maintaining a grounded, wearable feel. The semi-set style allows you to select a marquise stone that resonates personally, whether a vintage-inspired glow or a modern cut.

Resizing is straightforward, handled expertly in-studio to maintain the band’s integrity and finish.

Visit us in Williamsburg to explore this semi-set marquise engagement ring or begin your custom design journey online, where expert guidance meets thoughtful craftsmanship.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, blending ethical craftsmanship with local artisan expertise to create pieces made for life’s most meaningful moments.

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.