Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of the marquise diamond, casting a slender, dramatic silhouette that seems to stretch beyond the finger. This solitaire engagement ring, set in cool 14K white gold, showcases a 12 x 6 mm marquise cut—its sharp facets and tapered shape lending a refined, architectural grace.

Handcrafted in our Williamsburg studio, the band is polished to a satin finish that balances subtlety with a quiet sheen. The low-profile setting secures the diamond with delicate prongs, allowing light to flood the stone while keeping the ring comfortable for daily wear. Each piece undergoes meticulous inspection to ensure the precision of the cut and the integrity of the mount.

Our diamonds are lab-grown, offering a clarity and brilliance identical to mined stones but with a significantly reduced environmental footprint.

The slender shape and moderate size suit hands seeking an elegant statement without bulk, pairing effortlessly with wedding bands or stackable rings. Its streamlined profile slips easily beneath gloves or sleeves, making it a versatile choice for everyday life.

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

Discover this marquise solitaire in person at our Williamsburg workshop or begin your custom design journey online—crafted for those who appreciate refined artistry and ethical luxury.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with sustainable practices to create pieces that resonate with modern love stories.

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.