Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of an 8 x 4 mm marquise diamond, casting a slender, luminous shadow across the hand. This semi-set engagement ring in 18K yellow gold offers a poised foundation for your chosen center stone, framed by subtle accent details that emphasize modern clarity and architectural balance.

Crafted with a low-profile setting, the band’s smooth finish ensures comfort for daily wear while the secure prong arrangement highlights the marquise’s tapered drama without overwhelming the finger. Each piece is meticulously inspected in our Williamsburg studio, where precision meets quiet sophistication.

Our commitment to lab-grown diamonds means your ring carries a refined brilliance with a lighter environmental footprint, reflecting a thoughtful approach to ethical jewelry.

The slender band suits a variety of hand shapes and sizes, its streamlined form ideal for stacking or wearing solo. Its comfort fit and modest height make it glove-friendly and unobtrusive for everyday life.

Should you need resizing or wish to explore custom accents, our Brooklyn studio offers a pressure-free consultation to tailor your vision.

Discover this semi-set marquise ring in person or begin your custom design journey online—where Brooklyn craftsmanship meets modern romance.

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.

Haejin Jewelry is a Brooklyn fine-jewelry studio known for custom lab-grown designs. Every piece is finished in our Williamsburg studio, where artistry, ethics, and precision come together to create engagement rings that define modern love in New York City.