Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of a marquise diamond, casting a slender, dramatic silhouette across the hand. This three-stone semi-set engagement ring features a 9 x 4.5 mm marquise center, its narrow shape lending a graceful elongation that complements slender fingers.

Crafted from 18K white gold, the band is forged and hand-finished in our Williamsburg studio, with a low-profile setting designed for everyday wear. The three-stone arrangement balances visual impact with comfort, while the smooth comfort-fit shank ensures it sits naturally through daily moments. Each prong is meticulously inspected to secure your chosen center stone with precision and care.

Our diamonds are lab-grown, offering the clarity and sparkle of mined stones with a smaller environmental footprint and traceable origins.

This ring suits those who appreciate architectural elegance paired with artisanal craftsmanship—ideal for stacking alongside wedding bands or worn solo as a statement of refined taste. Its low profile makes it glove-friendly and unobtrusive for active lifestyles.

Should you wish to customize the center stone or inquire about resizing, our team is happy to guide you through the process with thoughtful attention.

Visit our Williamsburg studio to explore this semi-set marquise engagement ring in person or begin your custom design journey online. Haejin Jewelry brings expert craftsmanship and ethical values to every piece, rooted in the vibrant heart of Brooklyn’s fine-jewelry scene.

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.