Lab-Grown Diamond Engagement Ring

Imagine the gentle elongation of a marquise diamond catching morning light, its tapered points tracing a delicate silhouette across your hand. This semi-set solitaire invites you to select a 7 x 3.5 mm center stone, its shape known for a graceful, vintage-inspired drama that subtly enhances finger length.

Crafted in 18K white gold, the mounting balances refined strength with a sleek profile, designed to sit comfortably for daily wear. The slender prongs cradle the stone securely while allowing light to flood the facets, revealing the marquise’s signature brilliance. Finished by hand in our Williamsburg studio, the ring’s smooth band and low-profile setting ensure it layers effortlessly with other bands or stands alone with quiet confidence.

Each diamond is lab-grown, reflecting a commitment to ethical sourcing and environmental mindfulness without compromising on clarity or fire. This ring suits those who appreciate a blend of classic form and modern responsibility, especially for hands that favor elongated shapes and a refined, glove-friendly fit.

Should you wish to adjust the band size, resizing is available with care to preserve the ring’s delicate balance. Typical lead times for custom center stones vary, and our team is happy to guide you through the selection process.

Visit our Williamsburg studio to experience this marquise semi-set in person or begin your custom design journey online—crafted for the rhythms of everyday life and moments that matter.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical values and a deep connection to 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.