Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of the marquise diamond, casting a slender, dramatic shadow across the hand. This 8 x 4 mm marquise lab-grown diamond is set in a sleek platinum band designed for everyday grace.

Crafted with a low-profile setting, the ring sits close to the finger, minimizing snagging while maximizing comfort. The platinum band’s smooth finish and subtle accents frame the stone without overpowering its tapered brilliance. Each piece is meticulously inspected in our Williamsburg studio to ensure precision and durability.

Our lab-grown diamond offers the clarity and sparkle of mined stones with a significantly smaller environmental footprint, reflecting a quiet commitment to ethical jewelry.

The slim silhouette suits hands that appreciate refined geometry and pairs effortlessly with other stackable bands or a wedding band. Its comfort fit and low profile make it ideal for daily wear, including glove-friendly occasions.

Should you need resizing, our in-house artisans provide careful adjustments to maintain the ring’s integrity and balance.

Visit our Williamsburg studio to experience this marquise engagement ring firsthand or begin your custom design journey online—crafted for life’s most meaningful moments.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, combining expert craftsmanship with ethical sourcing and a modern design ethos rooted in 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.

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