Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of a marquise diamond, casting a slender, dramatic silhouette that seems to stretch beyond the finger. This three-stone semi-set engagement ring features a 9 x 4.5 mm marquise center, poised to frame your chosen side stones with artisan precision.

Crafted from warm 14K yellow gold, the band is shaped and polished in our Williamsburg studio, where each curve is smoothed for a comfortable fit that sits low against the hand. The setting’s delicate prongs cradle the marquise securely while allowing light to flood the facets, enhancing its signature brilliance without bulk.

Our commitment to sustainability is reflected in the use of lab-grown diamonds, offering clarity and sparkle with a lighter environmental footprint.

Designed for those who appreciate refined drama, this ring’s slender profile complements slender to medium finger shapes and layers effortlessly with wedding bands or stackable rings. Its low-profile setting ensures ease of wear, even with gloves or daily activity.

Should you need resizing, our Brooklyn studio offers expert adjustments to ensure a perfect fit without compromising the ring’s integrity.

Explore this semi-set design in person at our Williamsburg workshop or begin your custom journey online—where craftsmanship meets conscious choice.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a distinctly local spirit.

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.