Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of a 5 x 3 mm marquise diamond, casting a slender, graceful shadow across the hand. This semi-set solitaire invites you to select a center stone that balances architectural drama with refined simplicity.

Crafted in warm 14K yellow gold, the mounting features a low-profile setting designed for everyday wear. The slender prongs hold the stone securely while maintaining a sleek silhouette that slips comfortably beneath gloves or sleeves. Each ring is meticulously finished in our Williamsburg studio, ensuring a smooth comfort fit and precise alignment.

Our diamonds are lab-grown, offering a clear, sustainable choice without compromise on brilliance or integrity.

This solitaire suits those who appreciate a statement shape with subtlety—ideal for slender fingers or anyone seeking a ring that layers effortlessly with wedding bands or stackable styles.

Should you need resizing, our Brooklyn studio handles adjustments with care to maintain the ring’s balance and finish.

Explore this semi-set marquise solitaire in person at our Williamsburg studio or begin your custom design journey online, where expert guidance awaits.

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