Lab-Grown Diamond Engagement Ring

Imagine the subtle elongation of a marquise diamond catching light with every turn of the hand—its tapered points lending a quiet drama to your engagement story. This semi-set ring offers a sleek 18K white gold band designed to cradle an 8 x 4 mm marquise center stone, leaving room for your choice of lab-grown diamond to take center stage.

Crafted with a low-profile setting, the band sits close to the finger, ensuring comfort for daily wear and ease under gloves or alongside stackable rings. The clean lines and secure prong accents reflect meticulous finishing, polished in our Williamsburg studio to a smooth, tactile sheen.

Each lab-grown diamond embodies a commitment to ethical sourcing and sustainability, marrying beauty with responsibility without compromise.

Ideal for those who appreciate architectural elegance and a refined silhouette, this mounting suits slender to medium finger sizes, offering a balanced hand presence without bulk.

Should you need resizing, our Brooklyn studio provides expert adjustments to ensure a perfect fit, with typical lead times tailored to your custom design process.

Explore this semi-set marquise ring in person at our Williamsburg atelier or begin your custom design journey online—crafted for your life, your style.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to expert craftsmanship and ethical lab-grown diamond engagement rings, blending local artistry with sustainable luxury 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.