Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of an 8 x 4 mm marquise diamond, its tapered points drawing the eye along a graceful arc. This semi-set halo ring foundation, crafted from warm 18K yellow gold, offers a delicate frame ready to embrace your chosen center stone with artisan precision.

Each band is hand-finished in our Williamsburg studio, where the low-profile setting balances elegance with everyday wearability. The halo design, though not yet set, promises a luminous surround that enhances the marquise’s signature tapered drama without adding bulk. The smooth shank curves comfortably, designed to sit close to the finger for stacking or solo wear.

Our commitment to lab-grown diamonds ensures clarity and brilliance with a lighter environmental footprint, reflecting a modern approach to ethical jewelry.

This ring suits those who appreciate sculptural form and subtle statement—its slender profile complements slender or average finger sizes, and the semi-set style invites personal choice in stone selection. The secure mounting allows for straightforward resizing and care, crafted to last through daily life.

Explore this foundation in person at our Williamsburg studio or begin your custom design journey online, where expert guidance awaits without pressure.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending ethical craftsmanship with local artisan expertise to create pieces made for life’s most meaningful moments.

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.