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 the 6 x 3.5 mm lab-grown stone in a platinum embrace, its cool sheen framing the gem’s tapered drama with quiet precision.

Crafted in Williamsburg, the ring’s low-profile halo setting balances sparkle with wearability, designed to sit comfortably beneath a glove or alongside a stack of bands. The platinum band is hand-polished to a satin finish, ensuring a smooth touch against the skin and durability for daily wear. Each facet is inspected in-studio to meet exacting standards of brilliance and symmetry.

Our lab-grown diamonds offer the clarity and fire of mined stones with a lighter environmental footprint, reflecting a commitment to ethical jewelry without compromise.

Ideal for those who appreciate architectural elegance and subtle romance, this ring complements slender fingers and elongates the hand’s natural lines. Its refined silhouette pairs effortlessly with both minimalist and ornate styles.

Should you need a custom fit, resizing is available to ensure the ring feels as personal as the promise it represents.

Visit our Williamsburg studio to experience this marquise halo in person or begin your custom design journey online—crafted for life’s intimate moments.

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

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.