Board Thread:Roleplaying/@comment-8123489-20140320211514/@comment-85.246.249.220-20140719221922

1. Get a dagger (ebony or deadric)

2. Enchant said dagger with "soul trap" or " Fiery Soul Trap"

3. Fill Black soul gems only with thalmor.

4.  place (drop) those in the "Shine of Talos" of Whiterun (if Heimskr still alive)

or

5. sell those gems (to a nord trader, like Solaf in Falkreath)

or

6. place then in a chest and "forgot about them".