Kingdom Hearts II Where can you find...

Orichalum+ and Serenity Crystals in Kingdom Hearts II?

I have every other material to create the Ultima Weapon keychain.

I have:

Orichalum+ = 4/13

Serenity Crystals = 2/7


Halp?

 

Orichalcum+:

Moogle Shop: Obtain all material types.
Space Paranoids Central Computer Mesa.
Twilight Town Sunset Terrace.
The World that Never Was The Brink of Despair.
100 Acre Wood: Finish Starry Hill.
Atlantica: Finish 'A New Day is Dawning.'
Olympus Coliseum: Finish Goddess of Fate Cup.
​

It says you need thirteen, but you just need those & then to use the ingredient that cuts material costs in half.

Serenity Crystal(s):

Moogle Shop: Obtain a total of 500 materials; obtain all Twilight-type materials; obtain all Rank S materials
Dropped By: Assassin (4%), Berserker (4%), Sorcerer (4%), Samurai (4%)​

 

Thanks a bunch Misty!

 

they're more likely to drop them if you equip lucky lucky on everybody *weapons and ability*
sora: sweet memories
goofy: genji shield
donald: meteor staff *i think*

 

Equipment with the Lucky Lucky ability:
Sweet Memories Keyblade (How to get it: Complete the Spooky Cave in 100 Acre Wood)
Meteor Staff (How to get it: Seadrift Keep chest in Port Royal)
Genji Shield (How to get it: Complete the Titan Cup in Olympus Coliseum)
Lucky Ring (How to get it: Complete the Pain & Panic Cup in Olympus Coliseum)

Your characters will also have it as abilities, depending on what level you're at, but if you just use those weapons/equipment you shouldn't have much of a problem. As Rienzel said, enemies will be more likely to drop the items this way.

Also, moving to the Kingdom Hearts II Help section. =]