Lab-Grown Diamond Engagement Ring

Imagine the quiet moment when a soft cushion-cut diamond catches the light, its gentle facets casting a subtle glow that feels both intimate and assured. This semi-set platinum band awaits your choice of a 5 x 5 mm center stone, designed to showcase the cushion’s delicate blend of vintage warmth and modern clarity.

Crafted in platinum for enduring strength and a cool, refined finish, the mounting features precise accents that frame the center stone without overpowering it. The low-profile setting ensures the ring sits comfortably for daily wear, while the smooth band offers a gentle weight and balance that feels natural on the finger.

Each piece reflects a commitment to ethical jewelry, with lab-grown diamonds that deliver exceptional clarity and brilliance without compromise.

Ideal for those who appreciate structured elegance with a minimalist edge, this ring suits slender to medium finger shapes and pairs effortlessly with stackable bands or a wedding band. Its subtle silhouette fits comfortably under gloves or sleeves, making it a versatile choice for everyday life.

Should you need resizing, our Brooklyn studio offers expert adjustments to ensure a perfect fit without disrupting the ring’s clean lines.

Explore this semi-set cushion engagement ring in our Williamsburg studio or begin your custom design journey online—crafted with care, made for your story.

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 modern design ethos rooted in New York City’s creative heart.

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.