Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, dramatic shadow that feels both bold and intimate. This semi-set solitaire invites you to select a center stone that measures 12 by 6 millimeters, its tapered points drawing the eye along the length of the finger.

Crafted from warm 10K yellow gold, the mounting is shaped by hand in our Williamsburg studio, where each prong is meticulously formed to cradle the stone securely while maintaining a refined, low-profile presence. The band’s gentle curve offers a comfortable fit, designed to sit close to the skin without catching, ideal for daily wear.

Our commitment to ethical jewelry is reflected in the choice of lab-grown diamonds, which deliver clarity and brilliance with a reduced environmental footprint.

This ring suits those who appreciate a statement piece that elongates the hand and pairs effortlessly with stacking bands or a wedding ring. Its slender profile and smooth finish make it glove-friendly and unobtrusive.

Should you need resizing, our Brooklyn studio provides expert adjustments to ensure a perfect fit without compromising the ring’s integrity.

Explore this semi-set marquise solitaire in person at our Williamsburg workshop or begin your custom design journey online—crafted for life’s most meaningful moments.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and local artistry 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.