Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, luminous beam that seems to stretch beyond the hand. This semi-set three-stone ring invites your choice of a 12 x 6 mm center stone, poised to become the centerpiece of a story told in light and shadow.

Crafted from warm 18K yellow gold, the band curves gently with a low-profile setting that nestles close to the finger, offering both comfort and subtle elegance. Each prong is meticulously shaped and polished in our Williamsburg studio, ensuring the mounting balances security with refined craftsmanship.

Our lab-grown diamonds deliver the clarity and brilliance of natural stones while reflecting a commitment to ethical sourcing and environmental mindfulness.

The elongated marquise shape visually lengthens the finger, lending a graceful, vintage-inspired allure that pairs beautifully with the classic three-stone arrangement. Its slender form suits those who appreciate a ring that feels light and unobtrusive, ideal for daily wear and effortless stacking.

Should you need a custom fit, resizing is available to ensure the ring sits perfectly, crafted to your hand’s unique contours.

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

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.

Haejin Jewelry is a Brooklyn fine-jewelry studio known for custom lab-grown designs. Every piece is finished in our Williamsburg studio, where artistry, ethics, and precision come together to create engagement rings that define modern love in New York City.