Silver

World of Darkness - Armory
Silver is a soft metal. Blades made of silver are less effective than those of steel. Because of this, silver weapons inflict a –1 modifier to attack, and only have a Durability 2, as opposed to steel, which has a Durability of 3 or more. Of course, silver weapons are of particular use against Lupines. The metal burns their flesh as the silver injures, doing far greater damage than it perhaps should. This damage is aggravated, and does not heal with the speed to which werewolves are normally accustomed.
Type
Metal