Alchemy Stone

are items in.

Location and Uses
As a treasure it's main use is to be exchanged for Rupees, being one of the two which sells for 2500 (highest price) or train cars at Linebeck Trading Company, since you need two to get the Golden Engine and the Brawny Cannon (one piece for each)


 * One is given as a reward for completing the Snowdrift Station 's challenge
 * One is given as a reward for completing the Slippery Station's Champion course