Miracle Jewel

Miracle Jewel (ミラクル ジュエル Mirakuru Jueru) is an item from Smile Pretty Cure! that contains the power of The Light of Hope, from the beginning of the story, Royal Queen hide the truth of Miracle Jewel with some bogus story about Miracle Jewel is a jewel that can make any wish come true.

History
Royal Queen hid the truth of Miracle Jewel with some bogus story about Miracle Jewel is a jewel that can make any wish come true. because Royal Queen want to protect the Miracle Jewel from the Pierrot's grab, at the Episode 46, it revealed that Miracle Jewel truth is a jewel that given birth to a new Queen of Märchenland, and Miracle Jewel can't make any wish come true, but it power can used to release the Power of Hope in the midst of despair.

Source
Miracle Jewel created from the full turn of Royal Clock, and the Royal Clock absorb Candy to the Royal Clock and it become unhatched Miracle Jewel egg, it can hatched from the power of completed set of Cure Decor.

Power/Abilities
Miracle Jewel contains the Power of Hope and the Light of Hope, it power can used to release the Power of Hope in the midst of despair, it also can connected with Precure's feeling of never give up, and release the Light of Hope, it also the item that help the Smile! Cures and Royal Candy release the power of their ultimate attack, Miracle Rainbow Burst, Miracle Jewel is the one who connect the Earth and Märchenland, if it's power is lost, then, the Earth and the  Märchenland's connection is cut.