When light catches the elongated curves of a marquise diamond, it traces a delicate silhouette that feels both intimate and striking. This three-stone semi-set engagement ring frames a 12 x 6 mm marquise center with two smaller side stones, each carefully nestled in a low-profile platinum setting that balances presence with everyday ease.

Crafted in platinum for its enduring strength and subtle sheen, the band is polished to a satin finish that complements the diamond’s sharp facets without overwhelming them. The three-stone arrangement is designed with a comfort fit shank, allowing the ring to sit close to the finger while remaining glove-friendly and stackable with other bands.

Each lab-grown diamond is selected for clarity and brilliance, reflecting Haejin Jewelry’s commitment to ethical sourcing and sustainable craftsmanship without compromise. The marquise shape’s tapered points elongate the hand, making it an elegant choice for those who appreciate architectural form with a romantic edge.

This semi-set allows you to choose a center stone that speaks to your personal vision, with resizing and care guidance provided to ensure a lasting fit. Whether designed in-studio in Williamsburg or through our online process, this ring invites a thoughtful collaboration.

Explore the possibilities of custom design in Brooklyn with Haejin Jewelry, where expert craftsmanship meets ethical clarity in every lab-grown diamond engagement ring we create.

See how your design comes to life with our Ring Design Online, or start a truly custom piece from scratch in our Williamsburg studio.

Explore our Guides & Education and Stories & Lifestyle for diamond education, care tips, and real studio stories.