Lab-Grown Diamond Engagement Ring

Sunlight catches the trio of settings, promising a dance of brilliance that begins the moment your hand moves. This semi-set engagement ring foundation in platinum awaits a 12 mm round center diamond, known for its radiant sparkle and classic allure.

Each prong is meticulously shaped and polished in our Williamsburg studio, ensuring a secure yet delicate cradle for your chosen stone. The three-stone design balances presence with wearability, its low-profile setting crafted for everyday comfort and ease beneath gloves or rings stacked alongside.

Our commitment to lab-grown diamonds means this ring supports ethical sourcing and environmental mindfulness without sacrificing clarity or fire.

Ideal for those who appreciate a statement piece that remains refined, this mounting suits a bold center diamond while harmonizing with smaller side stones for layered light play.

Should you need resizing, our in-house artisans provide precise adjustments to maintain the ring’s integrity and comfort.

Explore this semi-set three-stone platinum ring in person at our Williamsburg studio or begin your custom design journey online—crafted for your unique story.

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

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.