Lab-Grown Diamond Engagement Ring

Imagine the subtle elongation of a hand, where a 12 x 6 mm marquise diamond begins its quiet dance of light—tapered, elegant, and framed by a delicate halo that amplifies its fiery silhouette without adding bulk.

This semi-set engagement ring foundation is crafted in polished platinum, chosen for its enduring strength and cool, luminous sheen. The halo setting is designed with a low profile to sit comfortably beneath gloves and daily wear, while the secure prong work ensures the center stone will be held with precision once set. Each piece is meticulously finished and inspected in our Williamsburg studio, balancing technical assurance with refined craftsmanship.

Our commitment to lab-grown diamonds means this ring supports ethical jewelry values with a smaller environmental footprint, reflecting a modern approach to luxury.

Its slender band and low profile make it ideal for those who appreciate a ring that feels as natural as it looks—perfect for stacking or wearing solo with ease. The marquise shape’s elongated form flatters a variety of hand sizes, lending a graceful, architectural edge to everyday elegance.

Should you need resizing, our Brooklyn studio offers expert adjustments to ensure a perfect fit without compromising the ring’s integrity.

Explore this semi-set halo in person at our Williamsburg studio or begin your custom design journey online—crafted for life’s intimate moments.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, where expert craftsmanship and ethical sourcing meet the spirit of New York City’s creative heart.

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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