Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of a marquise diamond, casting a slender, luminous silhouette that seems to stretch the hand with quiet drama. This three-stone semi-set engagement ring features a 6 x 3.5 mm marquise center, poised between two delicately faceted side stones, all awaiting your choice of lab-grown diamonds.

Crafted from warm 10K yellow gold, the band is shaped with subtle tapering to cradle the stones securely while maintaining a low profile that slips comfortably beneath a glove or daily wear. Each ring is hand-finished in our Williamsburg studio, where the artisan’s eye ensures smooth edges and a polished surface that catches light without glare.

Our commitment to ethical jewelry is reflected in the lab-grown diamonds you select—offering clarity and brilliance with a smaller environmental footprint.

The slender marquise shape complements longer fingers and lends an elegant elongation, while the three-stone setting symbolizes a past, present, and future narrative. Its balanced design suits those who appreciate refined geometry paired with meaningful detail.

Should you need resizing, our in-house team adjusts each ring with precision to maintain comfort and structural integrity.

Explore this semi-set design in person at our Williamsburg studio or begin your custom design journey online, where expert guidance awaits.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a distinctly local sensibility.

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.