U9 help!

Hi guys. 

I'm in the middle of playing U9 and I need some help. I have cleansed
five of the shrines (Compassion, Honesty, Sacrifice, Justice and
Humility). I was just forced into Terfin and have found out that I
can't hurt the Guardian. I'm now at Bucc's Den and have made the
sickening realisation that I no longer have the Orb of the Moons. I
think I might have dropped it to free some pack space, thinking it was
a black pearl. I was just wondering if there's any way to get it back?
Normal or cheating ways are fine. I'm desperate and I want it back
badly! 

Any help would be appreciated!

Regards, 
Tofu.