Sorry guys, can't spell very well so deal with me....
SAVE BEFORE ATTEMTING!

Ok, well to start off you need at least 2 or more of a single scroll and something you want to duplicate.
You MUST have only one of the item you want to duplicate.
Open your invitory and go to the acessories page and select the scroll.
When you select the scroll, hold 'A' down and then find the item you want to duplicate.
Then drop the item while still holding down 'A'.
Exit your invitory and you have duplicated your item.

NOTES:
The more scrolls you have the more duplications you will get.
This is an effective way to earn money by selling the duplicates.
You may duplicate scrolls and other items over and over to have as many as you want.
Will not work on Ninroot.
Works on sigil stones, rings, soul gems, varla stones, diamonds, potions, and some weapons and armor.
This trick will usually work on armor and weapons if they are in %100 condition.

Well, I hope this helps!
Any questions or anything, Cheeseman314@gmail.com