Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of the marquise diamond, casting a slender, confident silhouette across the hand. This semi-set three-stone engagement ring foundation in 10K yellow gold invites your choice of an 8 x 4 mm center stone, framed by two delicately balanced side gems that enhance its architectural grace.

Crafted with a modern-minimal ethos, the band’s smooth finish and subtle taper ensure a comfortable fit that sits low against the finger, ideal for daily wear without catching. Each curve is carefully polished in our Williamsburg studio, where precision meets quiet strength in every detail.

Choosing a lab-grown diamond here means embracing clarity and sustainability—ethical jewelry that reflects your values as clearly as its sparkle.

The ring’s streamlined profile suits those who appreciate structure and clarity, pairing effortlessly with stackable bands or worn solo for a statement of refined confidence. Its size and shape elongate the finger, offering a graceful yet assertive presence.

Should you need resizing or prefer a custom side stone selection, our Brooklyn studio offers personalized consultations to ensure your ring fits perfectly and reflects your vision.

Explore this semi-set marquise engagement ring in person at our Williamsburg studio or begin your custom design journey online—crafted for your life, your style.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to expert craftsmanship and ethical lab-grown diamond engagement rings, blending local artistry with modern design for a truly personal experience.

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.