Lab-Grown Diamond Engagement Ring

Imagine the moment light catches a marquise diamond’s elongated silhouette, casting a slender, shimmering shadow across your hand. This semi-set solitaire invites you to choose a 12 x 6 mm marquise stone, whose tapered points evoke quiet drama and graceful movement.

Crafted in 18K white gold, the mounting’s sleek, low-profile setting balances refined strength with subtle elegance. The band’s gentle curve and polished finish ensure a comfortable fit for everyday wear, while the secure prongs cradle your chosen gem with precision. Each ring is meticulously finished and inspected in our Williamsburg studio, where craftsmanship meets thoughtful design.

Our commitment to lab-grown diamonds means your ring carries a clarity and brilliance born from sustainable innovation, reflecting a modern approach to ethical jewelry.

Ideal for those who appreciate a statement piece that remains understated in daily life, this solitaire’s slender shape complements slender fingers and layers effortlessly with other bands. Its low profile makes it glove-friendly and unobtrusive, perfect for a life in motion.

Should you need resizing or prefer a custom consultation, our Brooklyn studio offers a pressure-free experience tailored to your vision and timeline.

Explore this semi-set marquise solitaire in person or begin your custom design journey online—each step guided by quiet confidence and Brooklyn authenticity.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to crafting lab-grown diamond engagement rings with expert care, ethical clarity, 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.