The Stoneblade

The legendary sword carried by ser Aidel Stoneblade, found with his remains in the flooded cellar of High Hill Ruined Keep.
The sword is made from a piece of rough hewn stone, into which razor sharp shards of Blackstone have been set and bound with strands of bronze. The hilt, such as it is, is bound with strips of leather, also set with bronze wire for grip.
Since its recovery from the flooded cellar, it rests aside ser Lorrie's Shield as part of the shrine that houses the High Hill Effigy of the Stormwyrm. Despite several attempts to clean and dry it, the sword is always covered in a layer of thin black fluid which pools around its base and must be removed regularly.