Lab-Grown Diamond Engagement Ring

Imagine the subtle elongation of your finger as an 8 x 4 mm marquise diamond catches the light with its tapered brilliance. This semi-set engagement ring foundation in 18K yellow gold offers a sleek, low-profile silhouette designed for everyday grace.

Crafted in Williamsburg, the band is expertly shaped for comfort and durability, with delicate accent settings that frame the center stone without overwhelming it. The smooth finish ensures it sits close to the hand, making it glove-friendly and ideal for stacking alongside wedding bands or personal heirlooms.

Each piece embraces the clarity and sustainability of lab-grown diamonds, reflecting a commitment to ethical jewelry without compromise. The marquise cut’s distinctive shape lends a refined drama, elongating the hand with architectural precision.

Resizing is straightforward, handled in-studio to maintain the integrity of the setting and metalwork. Whether you choose to complete the ring with your own center stone or explore our curated selection, this mounting invites personal expression.

Visit our Williamsburg studio to experience the craftsmanship firsthand or begin your custom design journey online with confidence and ease.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a local, personalized approach to design.

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.