Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, graceful shadow across the hand. This semi-set engagement ring invites you to select a centerpiece that balances boldness with refined elegance.

Crafted from warm 10K yellow gold, the band is shaped and polished in our Williamsburg studio to a smooth, comfortable fit that wears effortlessly every day. The low-profile setting cradles the stone securely while allowing light to dance along its pointed ends, emphasizing the marquise’s signature tapered drama.

Each ring reflects our commitment to ethical jewelry: the marquise diamond you choose will be lab-grown, offering clarity and brilliance with a smaller environmental footprint.

Designed for those who appreciate a statement piece that remains wearable, this solitaire silhouette complements slender fingers and pairs beautifully with stacking bands or a wedding ring. Its semi-set form means you can customize the center stone to your exact preference, ensuring a truly personal expression.

Should you need adjustments, resizing is handled with care in-studio to maintain the ring’s integrity and finish.

Explore this semi-set marquise solitaire in person at our Williamsburg workshop or begin your custom design journey online—where craftsmanship meets thoughtful design.

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

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.