Lab-Grown Diamond Engagement Ring

When light catches the elongated silhouette of the marquise, it casts a subtle, graceful shadow along the finger—an intimate dance of brilliance and form. This three-stone semi-set in platinum frames an 8 x 4 mm marquise center with delicate side stones, each prong meticulously shaped to cradle the gem securely while allowing maximum light to pass through.

Crafted in our Williamsburg studio, the platinum band is polished to a satin finish that feels cool and smooth against the skin, designed with a low-profile setting that slips comfortably beneath gloves and stacks effortlessly with other bands. The three-stone arrangement offers a poetic balance, symbolizing past, present, and future in a wearable form.

Each diamond is lab-grown, embodying clarity and sparkle without the environmental cost of traditional mining. This ethical choice aligns with a commitment to sustainability and conscious luxury.

Ideal for those who appreciate refined geometry and a ring that complements an active lifestyle, the slender band and secure setting ensure daily wearability without compromise. The marquise shape’s tapered points elongate the finger, lending an elegant, architectural presence.

Should you wish to adjust the fit, resizing is available to ensure the ring feels as natural as it looks.

Explore this semi-set design in our Williamsburg studio or begin your custom journey online—where thoughtful craftsmanship meets personal expression.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, where expert design and ethical craftsmanship converge in every piece.

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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