Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of the marquise diamond, casting a slender, dramatic silhouette across the hand. This halo setting cradles a 7 x 3.5 mm lab-grown marquise, its sharp geometry softened by a delicate ring of pavé stones that amplify brilliance without bulk.

Crafted in polished platinum, the band offers a low-profile design that sits close to the finger, ensuring comfort for everyday wear. The halo setting is meticulously finished to balance sparkle with subtlety, while the platinum’s cool tone enhances the diamond’s icy clarity. Each ring undergoes rigorous inspection in our Williamsburg studio to meet exacting standards of craftsmanship and durability.

Our lab-grown diamond embodies a commitment to ethical jewelry, delivering exceptional clarity and light performance with a smaller environmental footprint.

The slim, tapered shape suits slender to medium fingers, elongating the hand with its architectural form. Its low profile and smooth edges make it ideal for stacking or pairing with a wedding band, while the comfort fit ensures it remains unobtrusive beneath gloves or daily tasks.

Should you need resizing, our Brooklyn studio offers precise adjustments to maintain the ring’s integrity without compromising its sleek silhouette.

Explore this halo marquise engagement ring in person at our Williamsburg studio or begin your custom design journey online—crafted for those who value refined detail and ethical origins.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, where expert craftsmanship and ethical sourcing meet the spirit of New York City’s 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.