Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of the marquise diamond, casting a slender, luminous shadow across the hand. This 8 x 4 mm stone, set in cool platinum, draws the eye with its tapered points and vibrant sparkle.

Each ring is meticulously crafted in our Williamsburg studio, where the platinum band is hand-finished to a smooth, comfort fit that sits low against the finger. Delicate accent stones frame the center, enhancing the marquise’s dramatic shape without overpowering its refined geometry. The setting’s artisan details ensure durability for everyday wear while maintaining an elegant profile.

Our diamonds are lab-grown, offering exceptional clarity and brilliance with a significantly reduced environmental footprint.

Designed for those who appreciate a blend of bold form and subtle sophistication, this ring complements slender fingers and pairs beautifully with stackable bands. Its low-profile setting makes it glove-friendly and ideal for daily life.

Should you need resizing, our in-house jewelers provide precise adjustments to ensure a perfect fit without compromising the ring’s integrity.

Visit our Williamsburg studio to experience this marquise engagement ring firsthand or begin your custom design journey online with Haejin Jewelry’s expert guidance.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to crafting lab-grown diamond engagement rings with ethical precision and artisan skill, rooted in the vibrant heart of 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.