Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, dramatic sparkle that seems to stretch beyond the finger. This semi-set engagement ring invites you to select a 10 x 5 mm marquise stone, whose tapered points and graceful curves echo a refined, vintage-inspired elegance.

Crafted from warm 18K yellow gold, the mounting is shaped by hand in our Williamsburg studio, where each prong is meticulously formed to cradle your chosen diamond securely while maintaining a low-profile silhouette. The band’s gentle comfort fit ensures it sits naturally for daily wear, its smooth finish reflecting subtle artisan attention.

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

Designed for those who appreciate a statement piece that remains understated in its wearability, this solitaire setting complements slender fingers and pairs beautifully with stackable bands or a wedding band of your choice. Its low profile makes it glove-friendly and ideal for everyday life.

Should you need resizing or prefer a custom finish, our Brooklyn studio offers personalized consultations to tailor the ring to your hand and style.

Explore this semi-set marquise solitaire in person at our Williamsburg workshop or begin your custom design journey online, where expert guidance awaits without pressure.

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 deep connection to New York City’s artisan 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.