Men's David Yurman Forged Carbon Band Ring in 18K Gold, 8.5mm retailing for $2,250. 

Forged carbon is a lightweight yet strong composite originally used in aeronautics and sports cars. For jewelry, David Yurman pioneered a technique which fuses the modern material and precious metal into innovative, graphic designs.

18-karat white gold
Forged carbon
Ring, 8.5mm

About David Yurman:
In 1980, sculptor-turned-jeweler David Yurman introduced his eponymous collection. His artistic, sculptural pieces were a refreshing new interpretation, but David Yurman truly changed the trends of fashion with his now-classic twisted cable-inspired pieces.