Harvest Moon: Friends of Mineral Town Cheats

Gem of Truth
You can find a jewel of Truth by looking / doing the following:

1) In your dog house
2) The water trough in the little Barn where you keep your horse.
3) Exchange a 1000 medals at the Horse Races
4) Buy one from Won for 50000 G
5) The North most lampost between the Church and Rose Plaza
6) In the Library on the 2nd floor, check the shelves
7) In the Town Cottage, play the New Year's Game Show
8) Check the calendar in the Mountain Cottage
9) Once you have the other 8 jewels, take them to Mayor Thomas' house and check the refridgerator

The 9 jewels will be exchanged for the Gem of Truth, which will display your fatigue and strength levels when you have it equiped.