Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, dramatic sparkle that stretches across the hand. This semi-set three-stone engagement ring foundation in polished platinum invites your choice of center stone, framing it with two delicately balanced side gems for a narrative of shared brilliance.

Crafted in our Williamsburg studio, the band’s smooth comfort fit and low-profile setting ensure it wears effortlessly through daily moments. The platinum’s cool sheen is hand-finished to a satiny luster, its strength a subtle promise of enduring craftsmanship. Each prong is meticulously shaped to cradle your future center stone securely while maintaining an elegant openness that maximizes light play.

Our commitment to lab-grown diamonds means this ring supports ethical sourcing and environmental mindfulness without compromise on clarity or fire. The marquise shape, with its pointed ends and graceful curve, visually elongates the finger, lending a refined, architectural edge to the design.

Ideal for those who appreciate a ring that balances statement and subtlety, this mounting pairs beautifully with stackable bands or stands alone as a sculptural piece. Its streamlined profile fits comfortably under gloves or sleeves, making it a versatile choice for everyday wear.

Should you wish to adjust sizing or explore center stone options, our Brooklyn studio offers personalized consultations with transparent timelines and care guidance.

Visit us in Williamsburg or begin your custom design journey online to bring this three-stone marquise setting to life. Haejin Jewelry is proud to be a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, where expert craftsmanship and ethical values meet the spirit 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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