Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a delicate shadow that dances with every movement. This semi-set halo ring offers a poised foundation for a 9 by 4.5 mm marquise stone, its pointed ends lending a subtle drama and elongating the finger with refined grace.

Crafted from warm 18K rose gold, the band is shaped and polished in our Williamsburg studio, where artisan hands ensure a smooth comfort fit that sits low against the skin. The halo setting, designed to embrace the center stone, enhances brilliance while maintaining a delicate profile suited for daily wear.

Each piece reflects our commitment to ethical jewelry: the marquise diamond you select will be lab-grown, offering clarity and sparkle with a smaller environmental footprint.

This ring suits those who appreciate architectural elegance paired with a soft rose glow—ideal for slender fingers or anyone seeking a statement that remains understated. Its low-profile design fits comfortably under gloves and stacks effortlessly with complementary bands.

Should you need resizing or prefer a custom consultation, our Brooklyn studio welcomes you to explore options with no pressure and full transparency.

Discover the possibilities of this marquise halo semi-set by visiting us in Williamsburg or designing your ring online. Haejin Jewelry is a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, where expert craftsmanship and ethical values meet the spirit of New York City.

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.