Lab-Grown Diamond Engagement Ring

Morning light catches the subtle dance of three round diamonds poised to tell your story. This semi-set platinum band awaits a 9 mm center stone, its cool surface hand-polished to a satin finish that balances refined strength with everyday grace.

Each prong is meticulously shaped to cradle stones securely while maintaining a low-profile silhouette that slips comfortably beneath a sleeve or glove. The three-stone setting offers a harmonious rhythm, inviting light to play between each gem with quiet brilliance. Crafted in our Williamsburg studio, the ring’s platinum foundation is inspected for durability and smooth edges, ensuring it wears effortlessly day after day.

Our commitment to lab-grown diamonds means your ring carries clarity and sparkle with a lighter environmental footprint, reflecting a modern approach to ethical jewelry.

Designed for those who appreciate a blend of classic form and contemporary craftsmanship, this setting suits a range of hand sizes and complements stacking with other bands. Its subtle height and comfort fit make it an ideal choice for daily wear without sacrificing presence.

Should you need resizing or prefer a custom finish, our Brooklyn studio offers personalized consultations to tailor your ring precisely.

Explore this semi-set three-stone platinum engagement ring in person at our Williamsburg workshop or begin your custom design journey online, where expert guidance awaits.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, combining expert craftsmanship with ethical sourcing and a deep connection to New York City’s artisan 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.