Snow White Star 4-Star Evolution Gem

A diamond containing the purest power of the Star Realm can be used to enhance the star rank of Senshi "<Snow White Star> Muse."
It can be gifted to a Senshi through the "Gift" button in the Senshi interface, allowing their star rank to increase up to 4-Star.
You must own a 1-Star Senshi before gifting, and only one star rank can be increased at a time. After advancement, existing Star Energy will reset to zero.