Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along a graceful arc. This semi-set halo engagement ring foundation in polished platinum offers a refined stage for a 7 x 3.5 mm marquise center, designed to amplify the stone’s dramatic sparkle while maintaining a delicate profile.

Handcrafted in our Williamsburg studio, the platinum band is meticulously finished to a smooth comfort fit, balancing durability with everyday ease. The halo setting, once completed, will frame the marquise with a ring of smaller stones, enhancing brilliance without overwhelming the finger’s natural lines.

Each lab-grown diamond chosen for this setting reflects a commitment to ethical sourcing and environmental mindfulness, embodying a modern approach to fine jewelry.

Its low-profile design suits those who favor subtle elegance and practicality—ideal for stacking alongside wedding bands or wearing solo with gloves or daily tasks. The slender shape of the marquise naturally elongates the hand, lending a refined silhouette to a variety of finger sizes.

Should you need resizing, our in-house artisans ensure a precise adjustment without compromising the setting’s integrity. Typical lead times for completion allow for thoughtful customization and quality assurance.

Explore this semi-set halo ring in person at our Williamsburg studio or begin your custom design journey online, where expert guidance awaits every step.

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 artisan community.

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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