Lab-Grown Diamond Engagement Ring

Light catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along the finger with subtle drama. This semi-set halo engagement ring foundation in platinum offers a secure, low-profile frame designed to showcase a 6 x 3.5 mm marquise center stone with architectural grace.

Handcrafted in Williamsburg, the platinum band is polished to a satin finish that resists daily wear while maintaining a refined presence. The halo setting’s precise prong work balances protection with brilliance, ensuring the diamond sits close to the finger for comfort and glove-friendly wear.

Crafted with lab-grown clarity, this ring reflects a commitment to sustainable luxury without compromise. The cool platinum metal complements the marquise’s elongated shape, making it ideal for those seeking a sleek, modern silhouette that fits effortlessly into everyday life.

Its streamlined profile suits slender to medium finger sizes and pairs well with stacking bands or a wedding ring of similar width. Resizing is available to ensure a tailored fit, with typical lead times reflecting careful hand finishing.

Explore this semi-set halo in our Williamsburg studio or begin your custom design journey online—where expert guidance meets ethical craftsmanship.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert design with ethical sourcing and local craftsmanship in New York City.

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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