Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, luminous beam that dances with every movement. This semi-set engagement ring in warm 18K rose gold frames a 7 x 3.5 mm marquise center stone, inviting you to select a lab-grown diamond that balances architectural elegance with modern clarity.

The band’s sleek profile is designed for everyday grace, its subtle accents enhancing the diamond’s pointed shape without overpowering. Crafted in Williamsburg, the rose gold is hand-finished to a soft, satin sheen that feels smooth against the skin, while the low-profile setting ensures comfort beneath gloves or layered with other bands.

Each lab-grown diamond offers a transparent origin story, reflecting Haejin Jewelry’s commitment to ethical jewelry that honors both beauty and sustainability. The semi-set design allows for personalized choice, making this ring a thoughtful foundation for your unique expression.

Ideal for those who appreciate clean lines and confident structure, this ring suits slender fingers and complements stackable styles. Its balanced dimensions provide a poised presence without bulk, perfect for daily wear.

Resizing is available to ensure a precise fit, and our studio welcomes you to explore custom options in person or through our online design experience.

Discover the quiet strength of a marquise silhouette shaped by expert hands in Brooklyn. Haejin Jewelry blends ethical craftsmanship with refined design, creating lab-grown diamond engagement rings that resonate with modern romance and local authenticity.

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.