Lab-Grown Diamond Engagement Ring

The elongated silhouette of the marquise diamond, measuring 6 by 3 millimeters, draws the eye with its tapered points and subtle drama, perfect for those who appreciate refined geometry. This semi-set solitaire ring foundation in 10K white gold offers a sleek, low-profile setting designed to sit close to the finger, minimizing snagging and maximizing comfort for everyday wear.

Crafted in Williamsburg, Brooklyn, the band is carefully shaped and polished to a smooth finish, ensuring a balanced feel that complements the diamond’s slender form. The mounting’s precision allows for secure prong placement once your chosen stone is set, reflecting meticulous studio craftsmanship and attention to detail.

Our commitment to ethical jewelry is reflected in the exclusive use of lab-grown diamonds, combining clarity and sustainability without compromise. This ring’s streamlined design suits hands seeking elegance without excess bulk, and its low profile makes it ideal for stacking alongside wedding bands or wearing solo with understated grace.

Should you need resizing, our in-studio experts handle adjustments with care, preserving the ring’s integrity and fit. Lead times for custom setting completion are communicated transparently to ensure your experience remains seamless.

Explore this semi-set marquise solitaire in our Williamsburg studio or begin your custom design journey online—where thoughtful craftsmanship meets modern romance.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a commitment to designs made for daily life in New York City.

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.