No, you can however get it in Black 2 and White 2.
The Shiny Charm (Japanese: ひかるおまもり Shining Charm) is a Key Item introduced in Pokémon Black 2 and White 2. It increases the chance of encountering Shiny Pokémon.
B2W2 Nuvema Town (from Professor Juniper after obtaining all the Pokémon in the National Pokédex, excluding Mythical Pokémon, and having it evaluated by Cedric Juniper)
-Location in Black 2 and White 2, in case you have them. Hope I helped!