Route 12, Secret Super Training (An Opening of Lighting-Quick Attacks!), Route 18 (from Psychic Inver)
The locations of Shiny Stones are at:
Route 12: Surf needed (Requires riding on a Skiddo in the Skiddo farm. Jump to the top right ledge in the farm, and jump over 3 ledges at the right. Park Skiddo before the stairs, and go up there. Shiny Stone!)
Route 18 (from Psychic Inver: 7-9 Super Effective hits in order to obtain a Shinys Stone-prizes vary)
Secret Super Training (An Opening Of Lighting- Quick Attacks! Roserade Ballon-4800 points)
Btw, you spelling is fine!
Source Look for the info on the Shiny Stone (scroll down for a bit)