Weapon Enchant Stones are used to upgrade weapon items that are level 30 or less. Right-clicking on the stone opens a dialog box. One stone is needed to upgrade to combine 2 identical weapons into a new weapon with a +1 modifier, for example: One weapon enchant stone, and 2 Spirit Swords will make one +1 Spirit Sword. Two stones are needed to combine two +1 items in a +2. Three will combine +2 into +3. the pattern continues.