Lab-Grown Diamond Engagement Ring

When light catches the elongated points of this marquise shape, it sculpts a striking silhouette that both elongates and flatters the finger. The 9 x 4.5 mm marquise diamond, known for its tapered drama, is ready to be set in a classic solitaire style that highlights its architectural brilliance.

Crafted from 18K white gold, this semi-set ring offers a sleek, low-profile foundation designed for everyday wear. Each band is hand-finished in our Williamsburg studio, polished to a satin-smooth comfort fit that slips on effortlessly and pairs well with stacking bands or a wedding band.

Our diamonds are lab-grown, offering a clarity and sparkle identical to mined stones but with a lighter environmental footprint. This ethical choice reflects a commitment to sustainability without compromising on beauty or brilliance.

The solitaire setting suits those who appreciate refined simplicity and want a ring that feels as natural in daily life as it does in moments of celebration. Its slender profile works well on slender to medium-width fingers, and the semi-set design allows you to select a center stone that perfectly matches your vision.

Should you need resizing or prefer a custom finish, our Brooklyn studio provides personalized consultations to ensure your ring fits seamlessly into your lifestyle.

Explore this marquise solitaire semi-set in person at our Williamsburg workshop or begin your custom design journey online with Haejin Jewelry, where expert craftsmanship meets ethical clarity in every piece.

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.