In case anyone's interested, I wrote down the Daily Rewards list:
Day 01: 1000 gold
Day 02: 10 sand
Day 03: 5 ironite
Day 04: 15 sand
Day 05: 3000 gold
Day 06: 10 ironite
Day 07: 4000 gold
Day 08: 20 sand
Day 09: 15 ironite
Day 10: 25 sand
Day 11: 6000 gold
Day 12: rare soul (3-5 star character)
Day 13: 7000 gold
Day 14: 30 sand
Day 15: 30 ironite
Day 16: 35 sand
Day 17: 9000 gold
Day 18: 40 ironite
Day 19: 10000 gold
Day 20: 40 sand
Day 21: 50 ironite
Day 22: 45 sand
Day 23: 12000 gold
Day 24: gun/assassin soul (3-5 star gunner or assassin)