Heavy Stone

Heavy stone can be found while mining and is used in Blacksmithing and Engineering.

Source

 * Found in iron veins.
 * Looted from Searing Infernal in Felfire Hill at Ashenvale.

Heavy stone as an Ingredient
Heavy Stone is used in the following recipes:

Blacksmithing

 * Heavy Grinding Stone
 * Heavy Sharpening Stone
 * Heavy Weightstone

Engineering

 * Heavy Blasting Powder

Jewelcrafting

 * Heavy Stone Statue