Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along a graceful arc. This semi-set three-stone ring invites you to select a 9 x 4.5 mm marquise center, framed by two delicate side stones that enhance its sculptural presence.

Crafted from warm 18K rose gold, the band’s subtle sheen complements the diamond’s fiery brilliance, while the low-profile setting ensures everyday comfort without sacrificing sparkle. Each prong is meticulously hand-finished in the Brooklyn studio, securing stones with precision and a refined touch.

Our commitment to sustainability shines through the choice of lab-grown diamonds, offering clarity and fire with a lighter environmental footprint.

The slender band suits hands that appreciate elegance without excess bulk, and its three-stone design pairs beautifully with stacking rings or a wedding band. Its modest height makes it glove-friendly and ideal for daily wear.

Should you need resizing, our in-studio artisans handle adjustments with care to preserve the ring’s integrity and finish.

Visit us in Williamsburg to explore this semi-set marquise engagement ring in person or begin your custom design journey online—crafted for your life, shaped by Brooklyn’s artisan spirit.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a deep connection to New York City’s creative heart.

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.