Is it fixed? My Boldore evolved into Gigalith, so I'm not sure.
you can get all the different types of stones during the bug catching contest as long as you win 1st place. you will get different stones each time you play it, one day it will be the leaf stone, another day water stone, however if a Thunderstone is what you seek, you can buy it also at Dildadon Department Store on the 4th floor for the very lost cost of $2,100. LOL I should be in ads