Lab-Grown Diamond Engagement Ring

Light catches the elongated silhouette of a marquise diamond, its pointed ends drawing the eye along a graceful, confident line. This semi-set engagement ring foundation in 18K white gold offers a sleek, modern-minimal frame designed to highlight a 12 x 6 mm marquise center stone of your choosing.

Crafted with precision in Williamsburg, the band’s clean profile and subtle accent settings emphasize clarity and structure without distraction. The cool white gold finish balances understated elegance with everyday durability, while the low-profile mounting ensures comfortable wear beneath gloves or alongside stackable bands.

Each piece is thoughtfully made with lab-grown diamonds, reflecting a commitment to ethical sourcing and environmental mindfulness. The semi-set style invites customization, allowing you to select a marquise diamond that resonates personally, whether for its fiery brilliance or architectural poise.

Ideal for those who appreciate refined geometry and a confident statement, this ring suits hands that favor elongated shapes and a streamlined silhouette. Its balanced proportions and comfort fit make it a natural choice for daily wear and layering.

Resizing is available to ensure a perfect fit, and our Brooklyn studio welcomes you to explore options in person or begin your custom design journey online.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to crafting lab-grown diamond engagement rings with expert care, ethical integrity, and a distinct local sensibility.

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.