Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of an 8 x 4 mm marquise diamond, casting a slender beam that seems to stretch beyond the hand. This semi-set three-stone engagement ring foundation in warm 10K yellow gold invites your choice of center stone, framed by gently curved side settings that cradle light and shadow with quiet precision.

Crafted in Williamsburg, the band’s smooth, comfort-fit profile balances presence with everyday ease, designed to sit low enough for glove-friendly wear yet high enough to reveal the marquise’s signature taper. Each curve is hand-finished, inspected for seamless polish and structural integrity, ensuring a piece that moves with your life.

Our commitment to lab-grown diamonds means your ring begins with clarity and conscience, reflecting a sustainable approach to beauty without compromise.

Ideal for those drawn to romantic geometry and subtle drama, this mounting suits slender to medium finger shapes, pairing effortlessly with stackable bands or worn solo as a statement of refined intention.

Should you need resizing or wish to explore center stone options, our Brooklyn studio offers personalized guidance with thoughtful timing and care.

Visit us in Williamsburg or begin your custom design journey online—where craftsmanship meets your vision in every detail.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending ethical craftsmanship with local artistry to create pieces that resonate beyond the moment.

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.

Finished for daily wear — a low-profile silhouette and polished edges help minimize snagging.