Seven-Star Evolve Gem

Possessing the purest power of the Astral, this gem can help Senshi Evolve their star level.
It can be given to Senshi through the "Give Gift" button in the Senshi interface, and can increase the star level up to Seven-Star.
You must own a One-Star Senshi before you can give this gift, and it increases the star level by one each time. After Evolving, the existing star energy will reset to zero.