Lab-Grown Diamond Engagement Ring

Sunlight catches the sharp edges of a 6 x 6 mm square diamond, its crisp geometry framed by two smaller stones that echo its clarity and fire. This three-stone semi-set engagement ring offers a modern silhouette with a low-profile platinum band, meticulously hand-finished in our Williamsburg studio to ensure a smooth, comfortable fit for daily wear.

The platinum setting is crafted with precision prongs that secure each stone while allowing maximum light to enter, enhancing the square diamond’s architectural sparkle. Its semi-set form invites you to select a center stone that reflects your personal story, while the side stones provide balanced brilliance and depth.

Each lab-grown diamond is ethically sourced, embodying a commitment to sustainability without compromising on the clarity and radiance expected from fine jewelry. The cool, durable platinum band complements the sharp lines of the square cut, offering a subtle contrast that feels substantial yet refined on the finger.

Designed for those who appreciate clean geometry and understated elegance, this ring suits a variety of hand shapes and is ideal for stacking with other bands or wearing solo. Its low profile ensures it slips easily under gloves or sleeves, making it a practical choice for everyday life.

Should you need resizing or wish to discuss stone options, our Brooklyn studio offers personalized consultations with transparent timelines and attentive care.

Explore this semi-set three-stone square engagement ring in person at our Williamsburg workshop or begin your custom design journey online. Haejin Jewelry brings expert craftsmanship and ethical values to every piece, rooted in the vibrant heart of Brooklyn’s fine-jewelry scene.

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.