Akatsuki Rings play an important role in the membership. In total, there are ten rings given to each of the main members of Akatsuki. Each member of Akatsuki wears a ring as their identity. Each ring symbolizes membership and written with different kanji. Orochimaru were ten years ago out of the Akatsuki still keeps his ring.
Akatsuki Rings Position
1. Akatsuki Ring Pein (Nagato)
Name: Rei (Zero), Meaning: Empty or not there, Position: Right Thumb, Color: Unknown
Name: Seiryu, Meaning: Blue or Green, Position: Right index finger, Color: Blue
3. Akatsuki Ring Konan
4. Akatsuki Ring Uchiha Itachi
Name: Suzaku, Meaning: Red lit or Dengue, Position: Right ring finger, Color: Red
7. Akatsuki Ring Hidan
8. Akatsuki Ring Kakuzu
9. Akatsuki Ring Hoshigaki Kisame
Name: Kuchin, Meaning: The sky, Position: Left little finger, Color: Blue Sky / Light Blue
Kanji on Akatsuki Rings
Eight of the ten kanji of the Akatsuki rings taken from the Kuji-in (Nine Syllable Seals): a collection of nine hand postures used in meditation. Kuji-in have found their way into ninja folklore as a kind of magic spell. Pain’s “rei” and Zetsu’s “gai” are not from the Kuji-in. However, the only unused Kuji-in kanji, ? (gen, “mysterious”) have a strong resemblance to Zetsu’s “gai”, indicating an error. It would be a consistent error, however, since the “gai” kanji has been used in every instance the ring kanji has been shown, in both the manga and the data books.