Riddick considered the weapon, testing it with a few speculative flips and twirls. They might have been performed by a magician, for all that those nearby were able to follow the movements. Vaako was grudgingly impressed. The Lord Marshall watched with silent appreciation.
	“Half-gram heavy on the back end.” Flipping it around, he considered it thoughtfully. “Not so good for throwing. Good metal, though. Unusual alloy. Never seen the like.” He indicated the body of the dead Irgun. “Obviously no problem penetrating bone.”
-The Chronicles of Riddick (page 110)