These are the totals of items needed for each part as well as the overall totals. Just the items tradable items, just to give us a ballpark example of what is needed. This doesn't include the Spirit crystals and Omens needed in order to enter dungeons like Relics and Screaming Cavern.
Accessories = 105 Chaos Stones (1050 debris), 400 Low Grade Elementals, 200 Spirit Crystals
Armor = 330 Chaos Stones (3300 debris), 700 Low Grade Elementals, 100 Spirit Crystals
Weapon = 155 Chaos Stones (1550 debris), 700 Low Grade Elementals, 200 Omens of Calamity
Total = 590 Chaos Stones (5900 debris), 1800 Low Grade Elementals, 300 Spirit Crytals, 200 Omens of Calamity