Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of the marquise diamond, casting a delicate shadow that dances with every movement. This halo setting cradles a 9 x 4.5 mm marquise lab-grown diamond in polished platinum, its pointed ends drawing the eye along the finger with graceful intent.

Crafted in Williamsburg, this ring balances refined artistry and everyday wearability. The low-profile halo enhances the diamond’s brilliance without adding bulk, while the comfort-fit platinum band ensures a gentle embrace for daily life. Each facet is meticulously inspected to reveal the stone’s crisp clarity and vibrant fire.

Choosing a lab-grown diamond reflects a commitment to ethical jewelry, minimizing environmental impact without compromising on radiance or quality.

Ideal for those who appreciate a blend of vintage-inspired romance and modern precision, this ring’s slender shape complements slender fingers and pairs beautifully with stackable bands. Its subtle height makes it glove-friendly and unobtrusive for active lifestyles.

Should you need resizing, our Brooklyn studio offers expert adjustments to ensure a seamless fit.

Discover this marquise halo ring in person at our Williamsburg studio or begin your custom design journey online—crafted with quiet confidence and care.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, where ethical craftsmanship meets local expertise in New York City’s vibrant creative heart.

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.