Amulets are equippable items for your kin that grant varying degrees of bonuses, depending on which type of amulet is equipped. Currently, there are three types of amulets: Circle, Square, and Diamond, and come in three levels of rarity: Common, Rare, and Legendary.
While Common and Rare amulets can be found as drops in certain stages in each venue, Rare amulets can also be crafted via Alchemy by purchasing a blueprint at The Bifrost, then obtaining 20 Common amulets of the same type (i.e. - 20 Common Circle amulets are needed to alchemize one Rare Circle amulet). The links to the blueprints can be found below: