Lab-Grown Diamond Engagement Ring

Light catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along the finger with quiet drama. This three-stone semi-set engagement ring in platinum offers a refined foundation for a 7 x 3.5 mm marquise center, designed with a low-profile setting that balances presence and everyday comfort.

Crafted in platinum for durability and a cool, luminous finish, the mounting features precise prongs that secure the stones while maintaining a sleek profile. The band’s subtle curvature and smooth polish ensure it sits comfortably beneath the hand, ideal for daily wear without catching or bulk.

Each lab-grown diamond is selected for clarity and brilliance, reflecting Haejin Jewelry’s commitment to ethical sourcing and sustainability without compromise on sparkle.

This ring suits those who appreciate architectural elegance paired with practical design—its shape elongates the finger, while the three-stone layout adds depth without overwhelming. The low-profile setting pairs well with stacking bands or a wedding ring, and the comfort fit band accommodates active lifestyles.

Resizing is available to ensure a precise fit, with careful finishing to preserve the ring’s sleek lines.

Explore this semi-set marquise engagement ring in our Williamsburg studio or begin your custom design journey online, where expert guidance meets thoughtful craftsmanship.

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