The Jewel Pocketbook (ジュエル手帳 Jueru Techou?) is a pink book-like item used to cast spells and identify the certain Jewelpets that Rinko and the gang encounter. The pocketbook can also detect dark magic close by. In the earlier Episodes, it was only used to awaken Jewelpets from their "Jewel Charm" state by saying the magical word "Puri Puri Puririn Prism! Open, Jewel Heart!". There are 4 buttons in the Jewel Pocketbook when opened, and each combination of buttons activates a certain feature or magic. Diana possesses a darker version of the Jewel Pocketbook