Lab-Grown Diamond Engagement Ring

When light catches the elongated silhouette of a marquise diamond, it carves a striking, elegant line across the finger—an instant statement of refined confidence. This semi-set three-stone engagement ring in polished platinum frames a 9 x 4.5 mm marquise center, ready to be paired with your chosen stones for a personalized narrative.

Crafted with precision, the low-profile setting balances architectural clarity with everyday wearability. The platinum band offers a cool, substantial feel, its smooth finish designed for comfort and durability. Each prong is meticulously shaped to secure the stones while maintaining a sleek, modern-minimal aesthetic that complements the marquise’s tapered drama.

Our commitment to ethical jewelry shines through the use of lab-grown diamonds, ensuring brilliance without compromise on sustainability. This ring’s design suits those who appreciate structured elegance and desire a piece that layers effortlessly with other bands or stands boldly alone.

Its streamlined profile makes it glove-friendly and ideal for daily wear, while the three-stone layout invites customization to reflect your unique story. Should you need resizing or guidance on stone selection, our Brooklyn studio offers expert support with thoughtful care.

Explore this semi-set marquise engagement ring in Williamsburg or begin your custom design journey online—where craftsmanship meets conscious luxury.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings. Our expertise in ethical craftsmanship and custom design reflects the vibrant spirit of New York City, creating pieces meant for a lifetime.

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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