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 three-stone engagement ring foundation in 10K yellow gold offers a warm, buttery glow that complements the stone’s dramatic shape.

Each band is hand-formed and polished in our Williamsburg studio, with a low-profile setting designed for everyday wear. The three-stone layout balances visual impact with comfort, allowing the ring to sit close to the finger without catching. The yellow gold’s subtle sheen is carefully finished to highlight the diamond’s brilliance once set.

Crafted exclusively for lab-grown diamonds, this ring reflects a commitment to sustainable sourcing and traceable clarity. The marquise shape, measuring 10 by 5 millimeters, lends an elegant elongation to the hand, ideal for those who appreciate a distinctive yet refined statement.

Its streamlined silhouette pairs well with stacking bands or a simple wedding ring, while the comfort fit ensures it feels as natural as it looks. Should you need resizing or custom adjustments, we handle these with precision in-house, maintaining the integrity of the artisan finish.

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

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical materials and a local, hands-on design experience.

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.