This has got to be one of the best items in the game - a reusable soul gem that can hold one of ANY size (excluding human souls and whatnot like black soul gems, but thats another story). Obtaining this useful item is extremely easy assuming you are up for the long walk. To start this quest, you must be level 2 (easy enough) and you need to have Glow Dust which can be obtained from killing a will-o-wisp or buy it at the "Main Ingredient" shop in market district of the Imperial City. Once these two are met, you must find the Shrine of Azura. It is located to the north,north-west of Cheydinhal castle and past Lake Arrius. When you get close the marker will appear and guide you to the entrance. Once there, make you offering of glow dust at either 5-7 AM or PM (dawn or dusk). You will be given the quest to kill five people who have been afflicted with vampirism. They are located in the "Gutted Mine" which will be marked on your map. Clear the mine of the five vampires then return to Azura to receive your new item. Also, you will most likely be inflicted with Porphyric Hemophelia. You have three days to cure this unless of course you want to become a vampire. This can be cured with Cure Disease potions (always works for me though i have heard of some people who dont have any luck) or go to an altar at any church. Hope this helps in enchanting your items!!