Osiris Materials Spot:
Dayr 3rd Temple
Dayr 2nd temple
Dayr 1st Temple

 

Source Of Pure Earth
-Dayr 3rd Temple
-Noel Pagan Of Death (White Noel :D)

 

Source of Pure Firmament
-Dayr 2nd temple
-Firmament of Dayr Element (Blue Element)
-Dayr 1st temple
-Noel Pagan Of Fear (Green Noel)

 

Source of Pure Life
-Dayr 2nd Temple
-Noel Pagan Of Chaos (BLack noel :D)

 

Tri Element Essence
-Dayr 3rd temple
-Freyjanity Fighter
-Dayr 1st and 2nd temple
- Inspector and guard of Firmament
-Dayr Temples ( 1, 2 and 3)
-Alfons and Edward ( THE GOLEMS :D)

 

Note:
For tri element essence:
I prefer hunting at freyjanity Fighter coz they respawn Fast than the other spot
for pure firmament:
I suggest hunt the green noel :D no element XD they are melee while the element is range .

if you know something dont be shy to share XD this is what i know about hunting osi mats XD
dont be shy to ask question xD

Credit : Yui-Cres Ml.40