Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along a delicate arc. This semi-set halo ring foundation in warm 18K rose gold frames a 10 x 5 mm center stone with artisan precision, ready to cradle your chosen gem.

Hand-forged in our Williamsburg studio, the band’s subtle curve and secure halo setting balance drama with daily wearability. The rose gold’s soft blush complements the marquise’s vintage-inspired shape, while the low-profile design keeps the ring comfortable beneath gloves or alongside stackable bands.

Crafted exclusively with lab-grown diamonds, this piece reflects a commitment to sustainability and clarity without compromise. The semi-set format invites personal choice, allowing you to select a center stone that resonates with your story.

Ideal for those who appreciate architectural elegance paired with a warm, tactile finish, this ring suits slender to medium finger sizes and adapts beautifully to layering. Its secure setting and smooth edges ensure it wears comfortably every day.

Should you need resizing or guidance on selecting the perfect marquise diamond, our Brooklyn studio offers personalized consultations with no pressure and expert care.

Explore this semi-set halo ring in person or begin your custom design journey online—each piece is a collaboration born from Brooklyn craftsmanship and thoughtful design.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending ethical craftsmanship with local artisan expertise to create meaningful, wearable art.

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.