Sapphire Shard
From TPPC Wiki
What it does: Unlocks 
Articuno and 
Regigigas on maps. Unlocks 
Shiny/Dark Piplup in Secret Swap.
How to use: Attach it to your starter and search the maps. Swap your starter holding it for a low chance to get Shiny/Dark Piplup.
How to get it: Combine 10 Sapphire Fragments at the Research Lab
