Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a delicate dance of light that seems to stretch beyond the finger. This semi-set five-stone engagement ring in 18K yellow gold frames a 9 x 4.5 mm marquise center, its pointed ends drawing the eye along the hand’s natural line with subtle drama.

Crafted in Williamsburg, the band’s warm gold glow is polished to a soft sheen, designed for daily wear with a low-profile setting that nestles comfortably against the skin. Each side stone is carefully positioned to enhance the marquise’s signature brilliance without overwhelming its architectural grace.

Our lab-grown diamonds offer a clarity and sparkle indistinguishable from mined stones, created with a commitment to ethical sourcing and environmental mindfulness.

The slender band suits those who appreciate refined elegance and a ring that layers effortlessly with wedding bands or stackable pieces. Its modest height ensures it slips easily under gloves or sleeves, ideal for a life in motion.

Should you wish to adjust the fit, resizing is available through our Brooklyn studio with attentive care to preserve the ring’s balance and finish.

Explore this semi-set marquise engagement ring in person at our Williamsburg studio or begin your custom design journey online, where thoughtful craftsmanship meets your vision.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical values and a deep connection to New York City’s creative 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.