As a heads up, if at some point you destroyed/lost your finished augment, just Hail Cartographer Slipgear and he will pop a replacement onto your cursor.
have a look at http://plurpage.com/everquest/don.php it has a list of 2 slot charm slots so u can add your old Adventurerss stone one point the items have effects not shown on the site so look at the item when u go to Lavastone merchant befor paying your crystals