Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, luminous shadow that dances across your hand. This semi-set halo engagement ring foundation frames a 9 x 4.5 mm marquise stone, known for its dramatic taper and vintage-inspired elegance.

Crafted from warm 18K yellow gold, the band is shaped with a subtle comfort fit, its smooth interior contour designed for daily wear. The halo setting, once completed with your chosen center stone, will surround the marquise with a delicate ring of smaller diamonds, enhancing brilliance while maintaining a low profile that slips easily beneath gloves or sleeves. Each piece is meticulously hand-finished in our Williamsburg studio, inspected for precision and balance.

Our commitment to lab-grown diamonds ensures clarity and ethical sourcing without compromise, reflecting a modern approach to sustainability.

This ring suits those who appreciate a blend of bold geometry and refined craftsmanship—ideal for slender fingers or anyone seeking a statement piece that remains wearable and stackable. The semi-set nature invites you to select a center stone that resonates personally, with resizing available to ensure a perfect fit.

We welcome you to explore this design in person at our Williamsburg workshop or begin your custom journey online, where expert guidance awaits.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to expert craftsmanship and ethical lab-grown diamond engagement rings, blending local artisan skill with contemporary design for discerning couples.

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.