Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender beam that dances with quiet confidence. This semi-set engagement ring invites you to choose a 6 x 3.5 mm marquise stone, its tapered points lending a sculptural elegance to the hand.

Crafted in warm 14K rose gold, the mounting’s clean lines and subtle accents emphasize the diamond’s architectural shape without distraction. The low-profile setting ensures everyday comfort, while the polished finish reflects the Brooklyn studio’s meticulous handwork and quality control.

Each lab-grown diamond offers a clear, sustainable alternative, embodying ethical jewelry values without compromise on brilliance or character.

Designed for those who appreciate modern minimalism, this ring suits slender fingers and pairs effortlessly with stacking bands or a wedding band. Its refined silhouette slips easily beneath gloves or sleeves, making it a versatile choice for daily wear.

Should you need resizing or prefer a custom accent arrangement, our Brooklyn studio welcomes your ideas with expert guidance and thoughtful collaboration.

Explore this semi-set marquise engagement ring in Williamsburg or begin your custom design journey online—where craftsmanship meets conscious choice.

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