The amulet is located in the catacombs of the Hall of the Dead in Whiterun, in the northern most room. There are two tables, each of which has a candle with a red wreath around it. Facing the north wall, the amulet is on the table on the right. It may be hard to see because it is right in front of the red wreath that it blends into.
|Andurs' Arkay Amulet – FreeformWhiterunQuest04|