Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated curves of an oval diamond, casting a gentle glow that seems to stretch across the hand. This semi-set platinum solitaire ring offers a refined stage for a 7.5 by 5.5 mm oval center stone, inviting you to select a gem that balances brilliance with graceful elongation.

Crafted in cool, polished platinum, the six-prong setting secures the diamond with architectural precision while maintaining a lightweight feel. The band’s slim profile and smooth finish ensure comfort for daily wear, slipping easily beneath gloves or alongside other stackable pieces.

Each ring is thoughtfully designed in our Williamsburg studio, where lab-grown diamonds are chosen for their clarity and ethical provenance, reflecting a commitment to sustainability without compromise. The oval shape’s soft, elongated silhouette flatters a variety of hand sizes, lending a modern-minimalist confidence to your engagement look.

Should you need adjustments, resizing is handled expertly in-house to preserve the ring’s sleek lines. Typical lead times accommodate the custom selection of your center stone, ensuring a truly personal expression.

Explore this semi-set solitaire in person at our Brooklyn studio or begin your custom design journey online—where craftsmanship meets conscious choice.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical materials and a distinct local sensibility.

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.