Lab-Grown Diamond Engagement Ring

When light catches the elongated silhouette of this marquise diamond, it draws the eye along its tapered points, creating a subtle drama that feels both refined and distinctive. The 6 x 3.5 mm center stone is securely nestled in a low-profile platinum setting, designed to sit comfortably against the finger without catching on daily fabrics.

Crafted in Williamsburg, Brooklyn, this engagement ring features a precision hand-finished platinum band that balances durability with a sleek, modern edge. The accent stones are carefully set to enhance the marquise’s natural brilliance, while the smooth comfort fit ensures effortless wear from morning coffee to evening gatherings.

Each diamond is lab-grown, offering a clarity and sparkle identical to mined stones but with a smaller environmental footprint—an ethical choice made without compromise on beauty or performance.

Ideal for those who appreciate a ring that complements an active lifestyle, its low profile and secure setting make it glove-friendly and stackable with other bands. The elongated marquise shape also visually lengthens the finger, lending an elegant silhouette.

Should you need adjustments, resizing is available to ensure a perfect fit without altering the ring’s integrity.

Explore this design in our Williamsburg studio or begin your custom journey online—where expert guidance meets thoughtful craftsmanship.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio dedicated to lab-grown diamond engagement rings, combining ethical craftsmanship with local expertise to create pieces made for everyday life and lasting beauty.

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.