Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a delicate shadow that dances with every movement. This semi-set engagement ring invites you to select a center stone that echoes your unique story.

Crafted from warm 14K rose gold, the slender band is hand-finished in our Williamsburg studio to a smooth, comfort fit that rests lightly on the finger. The low-profile prong setting cradles the marquise shape—measuring 10 by 5 millimeters—allowing light to flood the stone’s tapered points, enhancing its dramatic sparkle without overwhelming daily wear.

Each ring begins with ethically sourced lab-grown diamonds, chosen for their clarity and brilliance, reflecting a commitment to sustainable luxury without compromise.

Designed for those who appreciate refined geometry and subtle elegance, this solitaire silhouette pairs effortlessly with stacking bands or stands strikingly alone. Its modest profile suits active hands and fits comfortably beneath gloves or sleeves.

Should you need a custom size, resizing is handled expertly in-house to maintain the ring’s seamless finish and structural integrity.

Visit our Brooklyn studio to explore your ideal marquise diamond or start your custom design journey online—where craftsmanship meets intention in every detail.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings. Our artisan approach blends ethical sourcing with expert craftsmanship, creating pieces designed for daily life in New York City and beyond.

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.