Lab-Grown Diamond Engagement Ring

Light catches the elongated silhouette of a marquise diamond, its pointed ends tracing a delicate arc that seems to cradle the hand. This semi-set engagement ring invites you to choose a center stone measuring 9 by 4.5 millimeters, whose dramatic shape lends a graceful elongation to the finger.

Crafted in cool, polished platinum, the five-stone setting balances brilliance with subtlety. Each side stone is carefully positioned to enhance the marquise’s tapered drama, while the low-profile mounting ensures a comfortable fit beneath gloves or daily wear. The band’s smooth finish and precise prong work reflect meticulous hand-finishing and quality inspection in our Williamsburg studio.

Our diamonds are lab-grown, offering clarity and sparkle with a lighter environmental footprint—an ethical choice woven into every facet.

This ring suits those who appreciate refined geometry and a statement that feels intimate rather than ostentatious. Its slender band and secure setting make it ideal for stacking or wearing solo, especially on hands that favor elongated shapes.

Should you need resizing or prefer a custom stone cut, our Brooklyn studio welcomes your questions with thoughtful guidance and expert care.

Explore this semi-set marquise engagement ring in person at our Williamsburg workshop or begin your custom design journey online—crafted for the rhythms of everyday life.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, where ethical craftsmanship meets modern design 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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