Lab-Grown Diamond Engagement Ring

When light catches the elongated silhouette of a marquise diamond, it carves a striking, tapered beam that draws the eye along the finger. This semi-set three-stone engagement ring in polished platinum offers a refined framework, ready to cradle an 8 x 4 mm marquise center stone with architectural precision.

Crafted in Williamsburg, the ring’s clean lines and low-profile setting ensure a comfortable fit for everyday wear, while the platinum band provides enduring strength and a cool, luminous sheen. Each element is meticulously finished by hand, inspected for flawless symmetry and smooth edges that glide beneath gloves or stack seamlessly with other bands.

Choosing a lab-grown diamond for the centerpiece reflects a commitment to ethical jewelry, reducing environmental impact without compromising on brilliance or clarity.

This design suits those who appreciate modern minimalism with confident structure—ideal for slender fingers or anyone drawn to the dramatic elongation of the marquise shape. The three-stone layout adds subtle narrative depth, symbolizing past, present, and future.

Resizing is straightforward, handled in-studio to maintain the integrity of the platinum setting and its precise balance.

Explore this semi-set marquise engagement ring in our Williamsburg studio or begin your custom design journey online, where expert guidance meets thoughtful craftsmanship.

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

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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