Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along a graceful arc. This semi-set three-stone engagement ring foundation in platinum awaits your choice of a 10 x 5 mm center stone, ready to frame the dramatic shape with balanced side gems.

Handcrafted in our Williamsburg studio, the platinum band is meticulously polished to a satin finish that softens its cool glow. The low-profile setting secures stones close to the finger, offering a comfortable wear that slips easily beneath gloves or alongside stackable bands. Each prong is shaped and inspected by hand, ensuring durability without bulk.

Our commitment to lab-grown diamonds means your center stone will carry the clarity and brilliance of natural gems with a significantly reduced environmental footprint.

This design suits those who appreciate architectural elegance paired with everyday practicality—ideal for slender to medium finger sizes where the marquise’s elongation enhances hand length. The three-stone layout invites personal expression through side stone selection, creating a bespoke narrative.

Should you need resizing, our in-house artisans accommodate adjustments with care to maintain the ring’s structural integrity.

Explore this semi-set foundation in person at our Williamsburg studio or begin your custom design journey online, where expert guidance awaits.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to crafting lab-grown diamond engagement rings with ethical precision and artisan expertise, rooted in the vibrant heart of New York City.

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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