Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, luminous beam across the hand. This semi-set engagement ring foundation in warm 18K yellow gold awaits a 10 x 5 mm marquise center stone, designed to showcase the gem’s tapered drama and vintage-inspired elegance.

Each band is meticulously shaped and hand-finished in our Williamsburg studio, with a delicate accent setting that balances refinement and durability. The low-profile mounting ensures comfort for daily wear while allowing light to dance freely through the stone’s pointed ends. The smooth interior offers a comfort fit, ideal for those who prefer a ring that feels as natural as it looks.

Crafted exclusively with lab-grown diamonds, this piece reflects a commitment to ethical sourcing and environmental mindfulness without compromising brilliance or clarity.

Its slender form complements slender or average finger sizes, and the subtle accent stones add a whisper of sparkle that pairs beautifully with stacking bands or a wedding ring. The semi-set design invites you to select a center stone that resonates personally, making the ring uniquely yours.

Resizing is available to ensure a perfect fit, and our Brooklyn studio offers a pressure-free consultation to explore custom options or view samples in person.

Discover the possibilities of custom design in Brooklyn by visiting our Williamsburg workshop or starting your journey online. Haejin Jewelry blends expert craftsmanship, ethical clarity, and local artistry to create lab-grown diamond engagement rings that honor your story and style.

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.