Lab-Grown Diamond Engagement Ring

When light catches the elongated curves of a marquise diamond, it traces a silhouette both bold and delicate—like a whispered promise. This three-stone semi-set ring features an 18K yellow gold band, its warm glow cradling a 10 x 5 mm marquise center, ready to be paired with your chosen stones.

Each curve of the band is hand-finished in our Williamsburg studio, polished to a soft sheen that feels smooth against the skin. The low-profile setting ensures the ring sits comfortably for daily wear, while the three-stone design offers a balanced, graceful presence on the hand.

Crafted exclusively with lab-grown diamonds, this piece reflects a commitment to ethical jewelry—minimizing environmental impact without compromising brilliance or clarity.

Its slender band and elongated center stone suit hands seeking a refined statement that complements stacking or stands elegantly alone. The semi-set format invites personal expression, allowing you to select side stones that resonate with your story.

Should you need resizing, our Brooklyn studio provides attentive adjustments to ensure a seamless fit. Typical lead times accommodate thoughtful customization without rush.

Explore this semi-set marquise engagement ring in person at our Williamsburg studio or begin your custom design journey online—where craftsmanship meets intention.

Haejin Jewelry embodies the art of lab-grown diamond engagement rings through expert design and ethical craftsmanship, rooted in the creative heart of Brooklyn, New York City.

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.