Lab-Grown Diamond Engagement Ring

When sunlight catches the elongated points of this marquise diamond, it casts a subtle, elegant shadow that dances along the finger. The 9 x 4.5 mm shape offers a striking silhouette, balancing dramatic presence with refined grace.

Crafted in warm 18K yellow gold, this semi-set solitaire ring features a low-profile mounting designed for everyday wear. The setting secures your chosen marquise stone with precision, offering a smooth band that feels comfortable beneath the hand and slips easily under gloves or rings stacked alongside it.

Each piece reflects our commitment to ethical jewelry, showcasing lab-grown diamonds that deliver clarity and brilliance without compromise.

Ideal for those who appreciate architectural lines and a confident yet understated statement, this ring suits slender to medium finger sizes, enhancing the hand’s natural elongation without overwhelming it.

Should you need adjustments, resizing is available to ensure a perfect fit, crafted carefully in our Williamsburg studio.

Explore this semi-set marquise solitaire in person or begin your custom design journey online—either way, you’ll experience the thoughtful craftsmanship that defines Haejin Jewelry.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a modern design ethos rooted in 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.