Someone made a Google Spreadsheet that includes the Locations for Farming a loto of the materials. Check it out here: http://spreadsheets.google.com/pub?key=p3gzAyCdsxdXn98OxMK6BVw&gid=0

Consumables have three items of each stat for each tier. The first item has more regen than max (stat), the second has more max than regen and the last is a green item which is more rare and has both good regen and max. In addition the green items last for 4 hours and through death. It is recommended...