Lab-Grown Diamond Engagement Ring

Imagine the subtle gleam of a marquise diamond catching light as you move through a sunlit Williamsburg street. This semi-set engagement ring foundation in platinum offers a sleek, low-profile frame designed to showcase a 6 x 3 mm marquise center stone—its elongated shape lending a refined, tapered elegance that visually lengthens the finger.

Crafted with precision, the platinum band is polished to a soft sheen and engineered for daily wear, balancing durability with a comfort fit that sits close to the hand without catching. The mounting’s accent settings are thoughtfully arranged to enhance sparkle while maintaining a streamlined silhouette, perfect for stacking or solo wear.

Each piece reflects our commitment to ethical jewelry, featuring lab-grown diamonds that combine clarity and conscience without compromise.

Ideal for those who appreciate architectural grace paired with practical design, this ring suits slender to medium finger sizes and slips easily beneath gloves or sleeves thanks to its modest profile.

Should you need a custom adjustment, resizing is handled expertly in-studio to ensure a seamless fit.

Visit our Williamsburg studio to explore this semi-set ring in person or begin your custom design journey online—crafted for life’s intimate moments with quiet confidence.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a distinctly local sensibility.

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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