Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, luminous shadow that dances with every movement. This three-stone semi-set engagement ring in 10K yellow gold frames a 9 x 4.5 mm marquise center with delicate side stones, balancing architectural grace and romantic warmth.

Handcrafted in Williamsburg, the band’s gentle curve and low-profile setting ensure a comfortable fit for daily wear, while the polished finish reflects Brooklyn’s artisanal spirit. The semi-set design invites you to select a lab-grown marquise diamond that speaks to your unique story, each facet cut to maximize brilliance and elongate the finger.

Our commitment to ethical jewelry shines through the use of sustainably sourced lab-grown diamonds, offering clarity and beauty without compromise. The slender band suits those who appreciate subtle elegance and a ring that layers effortlessly with wedding bands or stackable favorites.

Resizing is available to ensure a perfect fit, crafted with care to maintain the ring’s refined silhouette. Whether worn alone or paired, this piece adapts to your lifestyle with quiet sophistication.

Explore this semi-set marquise engagement ring in our Williamsburg studio or begin your custom design journey online—where craftsmanship meets intention in every detail.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending expert craftsmanship with ethical values and a local touch that honors New York City’s creative pulse.

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.