Question: how to get the shiny charm in pokemon platinum?
Answer: The Shiny Charm (ひかるおまもり Hikaru Omamori) is a key item that, when obtained, increases the chances of encountering Shiny Pokémon to 3 times the normal rate: a 1 in 2,370.6 chance. It can be obtained when you catch all Pokémon in the National Pokédex.