Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of this marquise-cut diamond, casting a slender, dramatic silhouette across the hand. The three-stone setting balances architectural clarity with modern minimalism, each gem held securely in a sleek platinum frame that feels weightless yet substantial.

Crafted in Williamsburg, this ring’s low-profile mounting ensures daily wearability without catching, while the comfort-fit band gently curves to the finger’s natural shape. The platinum’s cool sheen complements the diamond’s fiery facets, polished to a mirror finish and inspected meticulously for precision.

Each diamond is lab-grown, offering a transparent origin story and a lighter environmental footprint without compromising brilliance or clarity. The 12 by 6 mm marquise shape lends an elegant elongation to the finger, ideal for those who appreciate refined geometry with a confident edge.

Designed for those who favor clean lines and structured elegance, this ring pairs effortlessly with stackable bands or stands strikingly alone. Its streamlined profile fits comfortably under gloves or daily wear, making it a versatile choice for an active lifestyle.

Resizing is available to ensure a perfect fit, with care instructions tailored to preserve the platinum’s luster and the diamond’s sparkle over time.

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

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, combining expert craftsmanship with ethical sourcing and a commitment to modern design rooted in New York City’s creative spirit.

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.