Lab-Grown Diamond Engagement Ring

When light catches the elongated silhouette of a marquise diamond, it draws the eye along its tapered points, evoking a sense of refined drama and graceful movement. This semi-set halo engagement ring foundation, crafted in cool platinum, offers a sturdy yet elegant frame designed to showcase a 9 x 4.5 mm marquise center stone of your choosing.

Hand-forged in our Williamsburg studio, the platinum band is meticulously finished with a low-profile halo setting that balances brilliance with everyday wearability. The smooth comfort fit ensures the ring sits close to the finger without catching, while the halo’s delicate pavé work amplifies the diamond’s sparkle without overwhelming its distinctive shape.

Each piece reflects our commitment to ethical jewelry: the setting is designed exclusively for lab-grown diamonds, reducing environmental impact without compromising on clarity or fire.

This semi-set ring suits those who appreciate architectural elegance paired with subtle sparkle. Its slender profile complements slender fingers and layers seamlessly with wedding bands or stackable rings. The halo setting enhances the marquise’s lengthening effect, ideal for hands seeking a touch of sculptural refinement.

Resizing is straightforward within our Brooklyn studio, where every adjustment preserves the ring’s balance and finish. Typical lead times accommodate custom stone selection and setting completion.

Explore this foundation in person at our Williamsburg workshop or begin your custom design journey online—crafted for daily life, made to last.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a deep connection to New York City’s artisanal spirit.

See how your design comes to life with our Ring Design Online, or start a truly custom piece from scratch in our Williamsburg studio.

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