Lab-Grown Diamond Engagement Ring

When light catches the elongated silhouette of a marquise diamond, it reveals a striking balance of drama and elegance—its tapered points drawing the eye along the finger. This semi-set three-stone engagement ring in platinum offers a refined foundation, crafted with meticulous attention to detail in our Williamsburg studio. Each prong is hand-finished to cradle your chosen 12 x 6 mm marquise securely while maintaining a low-profile setting that slips comfortably beneath gloves and daily wear.

The cool, naturally hypoallergenic platinum band is polished to a satin sheen, enhancing the diamond’s brilliance without overwhelming its architectural form. Our artisan approach ensures every curve and angle is inspected for durability and comfort, making this ring as wearable as it is captivating.

Choosing a lab-grown diamond for your center stone reflects a commitment to ethical jewelry—minimizing environmental impact while celebrating clarity and light. The three-stone design frames the marquise with two smaller accents, adding depth and a narrative of past, present, and future.

This ring suits those who appreciate bold geometry paired with subtle sophistication, ideal for hands that favor elongated shapes or a statement piece that layers well with a slim wedding band. Resizing is available to ensure a perfect fit without compromising the integrity of the setting.

Visit our Brooklyn studio to explore this semi-set design in person or begin your custom design journey online—crafted for life’s most meaningful moments.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, where expert craftsmanship meets ethical values in every piece created for your unique story.

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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