Lab-Grown Diamond Engagement Ring

Light catches the elongated silhouette of a marquise diamond, its pointed ends drawing the eye along a graceful arc that feels both bold and refined. This semi-set engagement ring foundation in 18K yellow gold offers a sleek stage for a 9 x 4.5 mm marquise center, framed by subtle accent stones that enhance its architectural clarity without distraction.

Crafted with precision in Williamsburg, Brooklyn, the band balances modern minimalism and structural confidence. The low-profile setting ensures daily wearability, while the smooth finish and comfort fit make it a natural extension of the hand. Each piece undergoes meticulous inspection to meet exacting standards of polish and symmetry.

Our commitment to ethical jewelry is reflected in the exclusive use of lab-grown diamonds, combining brilliance with sustainability in every facet.

This design suits those who appreciate clean lines and a confident statement, especially flattering on slender fingers where the marquise shape elongates the hand. Its semi-set nature invites you to select a center stone that resonates personally, making the ring uniquely yours.

Resizing is straightforward and handled in-studio, ensuring your ring fits perfectly without compromising its refined silhouette.

Explore this foundation in our Williamsburg studio or begin your custom design journey online—where expert guidance and thoughtful craftsmanship meet.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending ethical craftsmanship with local artistry to create pieces designed for everyday elegance.

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.