Lab-Grown Diamond Engagement Ring

Imagine the subtle elongation of your hand as a 9 x 4.5 mm marquise diamond begins its quiet dance with light—sharp points catching glimmers, the silhouette both bold and refined.

This semi-set engagement ring foundation is crafted from 14K white gold, shaped and polished in our Williamsburg studio to a smooth, comfortable fit that wears effortlessly every day. The artisan finish reveals delicate accents along the band, designed to complement the marquise’s tapered drama without overpowering it.

Each piece is thoughtfully made with lab-grown diamonds, reflecting a commitment to sustainability and clarity that honors both earth and craft.

Its low-profile setting and slender band suit those who appreciate a ring that layers well with wedding bands or stackable favorites, while the elongated marquise shape flatters a variety of finger sizes and shapes.

Should you need resizing, our in-house jewelers ensure a precise adjustment without compromising the ring’s integrity.

Visit our Williamsburg studio to explore this semi-set foundation in person or begin your custom design journey online—crafted for daily life, made for your story.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, where expert craftsmanship and ethical materials meet the spirit of New York City’s artisan community.

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.