The Jewel Shards (ジュエルシャード Jueru Shādo) are heart-shaped jewels that help the girls transform and use attacks. They appear in Jewel Star Pretty Cure, and without them, the girls cannot transform or use their attacks.
The transformation Jewel Shards are heart-shaped and come in the Cures respective (eg. red for Cure Ruby).
The attack Jewel Shard are golden and has a pink star-like shape in the middle. They are heart-shaped as well and first appeared in Episode 1.
- The Jewel Shards are very similar to the Cure Loveads, Cure Decors and the Heart Seeds, since they are all used to create different effects, such as attacks and transformations.