Lab-Grown Diamond Engagement Ring

When light catches the elongated silhouette of a marquise diamond, it traces a delicate arc that feels both intimate and striking. This semi-set engagement ring invites you to choose a 9 x 4.5 mm marquise stone, whose tapered points create a subtle drama that elongates the finger with quiet elegance.

Crafted in warm 18K rose gold, the band’s gentle curve is designed for everyday wear, balancing a slender profile with a secure setting that cradles your chosen gem. The smooth finish and low-profile mounting ensure comfort beneath gloves or alongside stackable bands, making it a versatile companion for daily life.

Each ring is handcrafted in our Williamsburg studio, where precision meets thoughtful inspection to honor the integrity of every detail. The rose gold’s soft glow complements the marquise’s glassy facets, enhancing its architectural grace without overwhelming.

Our commitment to ethical jewelry is reflected in the exclusive use of lab-grown diamonds, offering clarity and brilliance with a lighter environmental footprint.

This solitaire silhouette suits those who appreciate refined geometry and a romantic statement that remains understated. The semi-set design allows you to select a center stone that resonates with your personal story, ensuring a truly bespoke expression.

Should you need resizing or guidance on stone selection, our Brooklyn studio offers a pressure-free consultation tailored to your lifestyle and preferences.

Explore this marquise solitaire in person or begin your custom design journey online—each step grounded in craftsmanship and care.

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

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.