Lab-Grown Diamond Engagement Ring

The elongated silhouette of the marquise diamond, measuring 8 by 4 millimeters, creates a striking visual that gently extends the finger with tapered elegance. This semi-set halo mounting in 18K yellow gold offers a delicate frame for your chosen center stone, designed with a low-profile setting that keeps the ring close to the hand for everyday comfort.

Crafted in Williamsburg, Brooklyn, the band’s smooth finish and secure prong work ensure durability without sacrificing refinement. The halo setting adds subtle brilliance, enhancing the marquise’s signature pointed ends while maintaining a sleek, unobtrusive profile ideal for stacking or solo wear.

Each piece reflects our commitment to ethical jewelry, featuring a lab-grown diamond center that balances clarity and sustainability with modern craftsmanship. The ring’s comfort fit and modest height make it glove-friendly and suited for active lifestyles.

Should you need resizing, our in-studio process accommodates adjustments with care, preserving the integrity of the setting and metalwork. Typical lead times allow for thoughtful customization without rush.

Explore this semi-set marquise halo in person at our Williamsburg studio or begin your custom design journey online, where expert guidance meets Brooklyn’s artisanal spirit.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending ethical craftsmanship with local expertise to create pieces made for daily life and lasting beauty.

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.