An amulet of power offers a good balance of attack and defence bonuses for all classes of combat. It is created by casting Lvl-4 Enchant on a diamond amulet, and has no requirements to be worn.
This item is a less expensive option for players who do not wish to buy an amulet of glory. However, it lacks teleportation capabilities and has weaker attack and prayer bonuses, it does however have the same strength bonus as well as higher defence bonuses.
This amulet is currently the best overall amulet for F2P players, although the amulet of strength is better in some cases, such as fighting low defence targets.
It can be received from magpie implings, the Crazy archaeologist as well as medium clue scrolls, which is helpful for ironmen. Another helpful way for ironmen to obtain one is by looting the Ham store room for a diamond amulet, and then enchanting it with 57 Magic.