Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of a marquise diamond, casting a slender, graceful shadow across the hand. This semi-set solitaire invites you to choose a 10 x 5 mm center stone that balances bold geometry with delicate refinement.

Crafted in warm 18K yellow gold, the mounting features a low-profile setting designed for everyday wear. Its secure prongs hold the stone close to the finger, minimizing snagging while maintaining a confident silhouette. The band’s subtle taper and smooth finish ensure comfort and ease, whether worn alone or stacked.

Each ring is finished by hand in our Williamsburg studio, where precision meets quiet durability. The lab-grown diamond you select will reflect ethical clarity and sustainability without compromise.

Ideal for those who appreciate architectural elegance with practical grace, this solitaire suits slender to medium finger shapes and slips easily under gloves or rings. Its streamlined design supports a lifestyle that moves from morning light to evening plans without pause.

Should you need resizing or prefer a custom adjustment, our Brooklyn studio offers attentive care with thoughtful timing.

Explore this semi-set marquise solitaire in person or begin your custom design journey online—crafted for your life, made in Brooklyn.

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 local artistry.

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.