Lab-Grown Diamond Engagement Ring

When light catches the elongated silhouette of a marquise diamond, it draws the eye along a graceful arc, lending a subtle drama to the hand. This semi-set halo engagement ring foundation in platinum offers a secure, low-profile frame designed to showcase an 8 x 4 mm marquise center stone, balancing architectural elegance with everyday comfort.

Crafted in platinum for durability and a cool, luminous finish, the mounting features a halo setting that enhances the stone’s brilliance while maintaining a sleek profile that slips easily beneath gloves or sleeves. The band’s smooth contours and precise prong work ensure a comfortable fit for daily wear, with expert finishing that reflects our Brooklyn studio’s commitment to meticulous craftsmanship.

Each lab-grown diamond chosen for this setting embodies clarity and sustainability, aligning with a modern ethical approach to fine jewelry. The halo design complements the marquise shape’s tapered points, creating a harmonious silhouette that elongates the finger without overwhelming it.

Ideal for those who appreciate refined geometry and subtle sparkle, this mounting supports a center stone that feels balanced and secure, suitable for stacking with wedding bands or wearing solo. Resizing is available to ensure a perfect fit, with lead times tailored to your custom design process.

Explore this semi-set halo in our Williamsburg studio or begin your custom design journey online—where expert guidance meets thoughtful, pressure-free collaboration.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending ethical craftsmanship with local expertise to create pieces designed for daily life and lasting beauty.

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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