Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of an 8 x 4 mm marquise diamond, casting a slender, radiant beam across the hand. This semi-set solitaire ring invites you to select a center stone that balances architectural drama with refined elegance.

Crafted from warm 18K yellow gold, the band is shaped and polished in our Williamsburg studio to a smooth, comfortable fit that wears effortlessly every day. Its low-profile setting keeps the diamond close to the finger, minimizing snagging while maximizing light reflection along the stone’s pointed ends.

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

Designed for those who appreciate a bold yet graceful statement, this ring suits slender fingers and pairs beautifully with stackable bands or a wedding band of contrasting metal. The semi-set style allows for personalized selection, ensuring your engagement ring is uniquely yours.

Resizing is available to ensure a precise fit, and our Brooklyn studio welcomes you to explore options in person or collaborate online at your convenience.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to crafting lab-grown diamond engagement rings with expert care and ethical craftsmanship, rooted in the vibrant artisan community of Williamsburg.

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.