Lab-Grown Diamond Engagement Ring

When light catches the elongated silhouette of a 12 x 6 mm marquise diamond, it traces a subtle arrow of brilliance across the hand. This semi-set halo engagement ring offers a refined balance between presence and practicality, designed to sit low and close for everyday wear.

Crafted in warm 18K rose gold, the band’s smooth finish complements the diamond’s pointed elegance without overwhelming it. The halo setting enhances the center stone’s length, creating a delicate frame that amplifies sparkle while maintaining a sleek profile. Each piece is meticulously finished and inspected in our Williamsburg studio to ensure comfort and durability.

Our commitment to lab-grown diamonds means this ring carries a clarity and ethical transparency that aligns with mindful choices, reducing environmental impact without compromising beauty.

Ideal for those who appreciate architectural grace paired with subtlety, the low-profile setting fits comfortably beneath gloves and stacks effortlessly with other bands. Its measured size and shape suit hands seeking a statement that is both modern and wearable.

Should you need resizing or prefer a custom consultation, our Brooklyn studio offers personalized guidance with thoughtful timing to match your schedule.

Explore this marquise halo semi-set in person or begin your custom design journey online—each step crafted to reflect your story with quiet confidence.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, where expert craftsmanship meets ethical design in every piece we create.

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.