Continued post: Rihanna in Japan during the premier of Battleship with a little accessory on her ear by Maria Francesca Pepe available from avenue.com for £32.00 ($55.56).

Pyramid Stud Earrings Purchase them for less [$18 plus tax], and in three different colors here. Rihanna wears the color Hematite.

Thank you snmratedr for the tip!