Lab-Grown Diamond Engagement Ring

When light catches the elongated silhouette of a marquise diamond, it draws the eye along a graceful, tapered line—an elegant statement of refined geometry. This semi-set engagement ring foundation in warm 18K rose gold awaits your choice of a 9 x 4.5 mm marquise center, designed to showcase the stone’s signature brilliance and lengthening effect.

Crafted with a low-profile setting, the mounting ensures a secure hold while maintaining a sleek, comfortable fit that slips easily beneath gloves or alongside other bands. The rose gold’s subtle blush complements the marquise’s sharp points, while the accent details add a delicate frame without overwhelming the stone’s presence. Each piece is finished by hand in our Williamsburg studio, inspected for precision and wearability suited to daily life.

Our commitment to lab-grown diamonds means your ring carries a clarity and ethical footprint that aligns with modern values—sustainably created without compromise.

This mounting suits those who appreciate architectural elegance paired with practical comfort, ideal for slender to medium finger sizes. Its streamlined profile supports stacking or solo wear with ease.

Should you need adjustments, resizing is available to ensure a perfect fit without altering the ring’s integrity.

Explore this semi-set marquise ring in person at our Williamsburg studio or begin your custom design journey online—crafted for your story, made for everyday grace.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a distinctly local sensibility.

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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