Lab-Grown Diamond Engagement Ring

Light catches the elongated points of the marquise diamond, casting a slender, confident silhouette across the hand. This three-stone engagement ring in platinum balances architectural clarity with modern minimalism, its clean lines framing the 8 x 4 mm center stone with quiet precision.

Each diamond is securely nestled in a low-profile setting, designed for daily wear without catching or discomfort. The polished platinum band offers a cool, substantial feel, finished by hand in our Williamsburg studio to ensure a smooth comfort fit that slides easily beneath gloves or alongside stackable bands.

Crafted exclusively with lab-grown diamonds, this ring reflects a commitment to ethical jewelry—minimizing environmental impact while maximizing brilliance and clarity.

Ideal for those who appreciate structured elegance and subtle drama, the marquise shape elongates the finger, making it a striking choice for slender or average-sized hands. The three-stone arrangement adds depth without bulk, perfect for a modern lifestyle.

Should you need resizing, our Brooklyn studio offers expert adjustments to maintain the ring’s integrity and comfort.

Explore this design in person at our Williamsburg studio or begin your custom journey online—where thoughtful craftsmanship meets contemporary vision.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a distinctly local sensibility.

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.