as far as i know you can't
to clone an item you need to put that item being held by a Pokemon and clone the Pokemon, how you clone i don't know...
See the related link below.
somehow
no it is not possible what so ever.
i have Pokemon diamond, and played 600 hours. its not possible. but you can catch a ditto, and make Pokemon eggs.
you have to clone from emerald (GBA) then make a Pokemon hold it migrate it and walla!
OK stop asking this because you cant
yes.you can clone any Pokemon
equip the master ball to a Pokemon and clone it using the Pokemon clone cheat.. its so simple..
clone a pkmn holding one!
u cant
You cannot clone Pokemon and items on diamond and pearl and platinum, but you can in emerald!