Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along the finger with subtle drama. This semi-set halo engagement ring foundation in 18K yellow gold awaits your choice of a 10 x 5 mm center stone, designed to amplify the marquise’s signature brilliance and graceful elongation.

Handcrafted in our Williamsburg studio, the band features a delicate halo setting that cradles the center stone with artisan precision, enhancing sparkle while maintaining a low-profile silhouette for everyday wear. The warm glow of 18K yellow gold complements the marquise’s vintage-inspired shape, and the ring’s smooth comfort fit ensures it sits naturally against the skin.

Each piece reflects our commitment to ethical jewelry, crafted exclusively for lab-grown diamonds that offer clarity and sustainability without compromise. The semi-set design invites personalization, allowing you to select a lab-grown marquise diamond that resonates with your vision.

Ideal for those who appreciate a refined statement with a touch of historic elegance, this ring balances bold geometry with wearability—stackable with slim bands or stunning on its own. Its low profile and secure setting make it glove-friendly and suited for daily life.

Should you need resizing or guidance on selecting the perfect center stone, our Brooklyn studio offers expert consultation with thoughtful timelines tailored to your needs.

Explore this semi-set halo marquise ring in person at our Williamsburg workshop or begin your custom design journey online. Haejin Jewelry brings expert craftsmanship and ethical clarity to lab-grown diamond engagement rings, rooted in the creative heart of Brooklyn.

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.