Mob drop information: Takish-Hiz

[Runengetum]

The following mobs all drop Phosphorous Powder:
a phosphorescent golem
a Royal guardian
a Royal confidante
a Jeweled Guard hero
a forgotten Cave Dweller
an earthen defender
a Jeweled Guard master
Multifaceted Summoning (named mob)

Also, a phosphorescent golem drops a Diamond and a Royal hierophant drops a Blue Diamond.

[Krazick]

Added sources for the Powder,

For the Diamond & Blue Diamond, just added a blanket -MULTIPLE MOBs/Multiple Zones-