Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender beam that seems to stretch beyond the hand. This three-stone semi-set engagement ring in 18K rose gold frames a 9 x 4.5 mm marquise center with two delicate side stones, each carefully positioned to enhance its tapered drama.

Crafted in Williamsburg, the warm rose gold band is hand-finished to a smooth comfort fit, its low-profile setting designed for everyday wear without catching. The prongs cradle the marquise securely while allowing light to flood the facets, revealing the stone’s signature brilliance and graceful elongation.

Each diamond is lab-grown, offering clarity and sparkle with a lighter environmental footprint—an ethical choice that aligns with mindful modern love.

This ring suits those who appreciate refined geometry and subtle romance, its slender shape flattering longer fingers and pairing effortlessly with stackable bands or a wedding band. The semi-set design invites you to select a center stone that reflects your personal story.

Resizing is available to ensure a perfect fit, and our Brooklyn studio welcomes you to explore custom options in person or begin your design journey online.

Haejin Jewelry brings expert craftsmanship and ethical sensibility to every piece, rooted in the creative heart of Williamsburg, Brooklyn. Our lab-grown diamond engagement rings embody a modern approach to fine jewelry, where artistry and sustainability meet.

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.