This gorgeous 4" black slate coaster features a Mjölnir with a small Valknut encircled by the elder futhark rune symbology. Engraved here in Maryland + you choose round or square! Mjölnir is the hammer of the thunder god Thor in Norse mythology, used both as a devastating weapon and as a divine instrument to provide blessings. The Norse Vikings believed that warriors who died bravely in battle were taken by Odin’s servants, the Valkyrie, to live in Valhalla, Odin’s hall in Asgard. The Valknut symbology is found often on grave markers, urns and funeral pyres of those who died in battle.