Io (イオIo?)
Jewel: Iolite
Species: Holland Lop
Gender: Male
Jewel Power: Refreshment
Attribute: Magical Blue
Voiced by: Nozomi Sasaki

Io is the fifth member of the Jewel Eight, He's a brown Holland Lop rabbit who symbolizes refreshment and wears a purple bow tie. Appearing in the First Season, Io was awakened by Dian's magic during the day before Christmas and turned him evil with his Jewel Power, causing havoc on Earth. He was reclaimed by Rinko through the Jewel Games and converted to good once again. The unique thing about him is that he doesn't use a broomstick to fly around like the other Jewelpets, instead, he flies using his floppy ears, which serve as wings. All of speeches ends in "Dachi". He appears again in Jewelpet Twinkle as one of the three Jewelpets that grew in huge sizes due to Sara's Magic. Jewelpet Sunshine he is in 3rd Grade Rose Section and he might has a crush on Peridot. His birthday is on December 29 and his name is based on the jewel Iolite.