Lab-Grown Diamond Engagement Ring

When light catches the elongated facets of a marquise diamond, it creates a striking silhouette that draws the eye along the finger’s natural line. This semi-set platinum mounting awaits your choice of a 9 x 4.5 mm marquise center, designed to showcase the stone’s dramatic taper and brilliance with modern-minimal clarity.

Crafted in platinum for enduring strength and a cool, luminous finish, the setting features delicate accent details that balance architectural precision with subtle sparkle. Its low-profile design ensures comfortable daily wear, slipping easily beneath gloves or alongside stackable bands without catching.

Each piece is meticulously finished and inspected in our Williamsburg studio, where expert hands refine every curve and prong to secure your stone with quiet confidence. The ethical advantage of lab-grown diamonds complements this craftsmanship, offering a sustainable choice without compromise on clarity or fire.

Ideal for those who appreciate structured elegance and a confident, clean aesthetic, this mounting suits slender to medium finger shapes, enhancing length and grace. Resizing is available to ensure a perfect fit, with lead times tailored to your custom design journey.

Explore this semi-set marquise engagement ring in person at our Williamsburg studio or begin your custom design online—where thoughtful craftsmanship meets Brooklyn’s creative spirit.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending ethical craftsmanship with expert design for those seeking modern elegance rooted in local artistry.

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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