Players; Smithing; Taverley 2h shop (members only); Bought from Grand Tree (third floor); Gnome Village; Weapon & Armor shop in Warriors Guild (Second floor); Monster drop.
Notes:
An Adamant 2h sword requires 3 Adamant bars and a smithing level of 84 to make. These yield 187.5 experience when smithed. An Attack level of 30 is required to wield an Adamant 2h sword.