Silvthril is an alloy of silver and mithril, created simply by mixing the two metals when molten and allowing the compound to cool. Silvthril equipment is sturdy and is a weakness of vampyres. The legendary rod of Ivandis Seergaze was made of silvthril, as is the Ivandis flail, a more recent weapon based on the rod's design. Additionally, the Screwte, a repeating blisterwood crossbow, has silvthril limbs.
Silvthril features in the Myreque quest series.