Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated facets of an emerald-cut diamond, casting a glassy shimmer that feels both architectural and intimate. This semi-set platinum band awaits your choice of a 6.5 by 4.5 mm emerald-shaped center, designed to showcase the stone’s clarity and step-cut elegance.

Handcrafted in our Williamsburg studio, the platinum band is meticulously finished for a smooth, comfort fit that rests low against the finger. Its subtle profile ensures everyday wearability without sacrificing presence, while the secure setting frames the stone with clean lines and artisan precision.

Each lab-grown diamond option offers a transparent origin story and a smaller environmental footprint, aligning with a modern ethical approach to fine jewelry.

Ideal for those who appreciate refined geometry and a sleek silhouette, this mounting complements slender to medium finger sizes and layers effortlessly with stackable bands or wedding rings. Its low profile also makes it glove-friendly for seasonal wear.

Should you need resizing, our in-studio experts handle adjustments with care to maintain the ring’s integrity and finish.

Explore this semi-set emerald solitaire in person at our Williamsburg workshop or begin your custom design journey online—crafted for a lifetime of moments.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio dedicated to expert craftsmanship and ethical lab-grown diamond engagement rings, blending artisan skill with a commitment to sustainable luxury.

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.