Lab-Grown Diamond Engagement Ring

Sunlight catches the soft, rounded corners of a 7 x 7 mm cushion diamond, its gentle glow inviting a closer look. This three-stone semi-set engagement ring in 18K yellow gold offers a warm embrace, the rich metal hand-forged and polished to a satin finish that balances subtlety with presence.

Each prong is meticulously shaped to cradle your chosen center stone securely while allowing maximum light to reveal the cushion cut’s signature blend of vintage softness and modern brilliance. The low-profile setting ensures everyday comfort, with a smooth band that feels natural against the skin and pairs effortlessly with wedding bands or stackable rings.

Crafted in our Williamsburg studio, this ring foundation reflects a commitment to ethical jewelry: the center diamond is lab-grown, offering clarity and sparkle without compromise to the earth.

Designed for those who appreciate artisanal detail and a classic silhouette with a contemporary edge, this semi-set invites you to select a cushion diamond that resonates with your personal story. Its balanced proportions suit a range of finger sizes, while the three-stone layout adds meaningful dimension and light.

Should you need resizing or prefer a consultation on diamond options, our Brooklyn studio offers a pressure-free experience tailored to your timeline and style.

Explore this semi-set in person or begin your custom design journey online—each step guided by expert hands and a passion for craftsmanship.

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 made for daily life and lasting connection.

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.