The item ID for Amulet of Arkay in Skyrim on Steam (PC / Mac) is:
To spawn this item in-game, open the console and type the following command:
player.AddItem 000CC848 1
To place this item in-front of your character, use the following console command:
The Amulet of Arkay is one of nine Amulets of Nine Divines. You can purchase this item from Radiant Raiment, and various other locations across Skyrim. This amulet, like the other Nine Divines, provides an effect - the effect being 10 extra health points (Fortify Health).