Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along the hand’s natural lines. This semi-set engagement ring foundation in warm 14K yellow gold awaits a 9 x 4.5 mm marquise center, designed to showcase the stone’s dramatic, vintage-inspired profile.

Handcrafted in our Williamsburg studio, the band features delicate accent settings that balance subtle sparkle with artisanal restraint. The low-profile mounting ensures everyday comfort and ease beneath gloves or stacked alongside other bands, while the polished finish reflects a quiet Brooklyn craftsmanship ethos.

Each piece is designed with lab-grown diamonds in mind, offering clarity and brilliance with a lighter environmental footprint. This ring suits those who appreciate architectural elegance paired with a warm, tactile gold feel.

Resizing is straightforward, handled carefully in-studio to maintain the integrity of the delicate accents and smooth comfort fit. Lead times vary slightly depending on stone selection but remain transparent throughout the custom process.

Explore this semi-set marquise ring in person at our Williamsburg workshop 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, blending expert craftsmanship with ethical sourcing and a deep connection to New York City’s artisanal spirit.

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.