While slipping your Nine into your Crossbreed SuperTuck in the morning do NOT clip this baby to your pocket. While ceramic knives will take a mean edge, they can be as brittle as Bea Arthur’s hips. I know from firsthand experience that ceramics are special knives for special purposes (read: no twisting, prying or chopping) but getting your hands on one of the world’s sharpest blades for less than $30? Shut up! Frost Cutlery’s affordably-priced pocket folders feature steel frames, composite grips, and liner-locking blades made from wickedly-hard Zirconium Oxide ceramics.