Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of a marquise diamond, casting a slender, dramatic shadow that dances with every movement. This three-stone engagement ring centers on a 9 x 4.5 mm marquise cut, its signature shape lending a graceful elongation to the finger.

Crafted in cool platinum, the ring features a low-profile setting that nestles close to the hand, balancing presence with everyday comfort. Each stone is meticulously secured with hand-finished prongs, polished to a soft gleam that complements the diamond’s sharp geometry. The band’s subtle taper enhances wearability, making it an ideal choice for stacking or solo wear.

Our diamonds are lab-grown, offering a clarity and brilliance indistinguishable from mined stones, while reflecting a commitment to sustainability and ethical sourcing.

This design suits those who appreciate architectural elegance paired with practical refinement—its slender silhouette flattering longer fingers and fitting seamlessly beneath gloves or alongside wedding bands. The comfort fit band ensures all-day ease without sacrificing style.

Should you need resizing, our Brooklyn studio provides precise adjustments to ensure a perfect fit without compromising the ring’s integrity.

Visit us in Williamsburg to experience this artisan-crafted ring firsthand or begin your custom design journey online with Haejin Jewelry, where expert craftsmanship meets ethical luxury in the heart of Brooklyn.

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.