You can find the Kappa Jewels on various floors of the Winter Mine. The mine is only accessible during winter, when the lake freezes over. If you have the Teleport Stone, you can access the mine any time of the year.
Kappa Jewels Location
You can find the Kappa Jewels on floors 0, 40, 60, 80, 120, 140, 160, 180, and 255. You can find them by smashing rocks with your hammer, although their appearance is completely random.
On their own, the Kappa Jewels do nothing. If you collect all 9 jewels, they will become the Gem of the Kappa, a usable tool that will recover your fatigue when equipped.
Tips for Finding the Kappa Jewels
You can find the Kappa Jewels randomly hidden inside rocks in the mine. Also, they don’t always appear on the floor they are supposed to. To prevent wasting stamina trying to find a Kappa Jewel, you can do the following:
- Save your game before going down to the floor where a Kappa Jewel is located.
- Go down the stairs to the floor below. Smash rocks to find the jewel.
- If you’ve smashed all the rocks and the Kappa Jewel didn’t appear, load your game and try again.
Finding all 9 of the Kappa Jewels is a long and tedious process, so make sure to save your game once you’ve found one.
The Gem of the Kappa
Once you’ve collected all 9 Kappa Jewels, the Kappa will appear and exchange them for a Gem of the Kappa. This item goes into one of your tool slots, so be sure to have free space in your rucksack.
The Gem of the Kappa is a handy tool that can recover your fatigue when equipped. The fatigue recovery effect only occurs when you are outdoors and time is passing by. You must also have the gem equipped as your active tool.
Fatigue is different from stamina, it only fills up once you’ve used up all of your stamina. Once your fatigue builds up, your character may turn blue from exhaustion. Any further actions such as using tools will make you pass out.
Equipping the Gem of the Kappa is the only way in the game to recover your fatigue completely besides sleeping. You can see how much fatigue you have recovered using the Gem of Truth.
Tip: Time is frozen inside any of the mines, so the Gem of the Kappa is useless when mining.
Check out the guide on how to get the Gem of Truth here: How to Get the Jewels of Truth and Gem of Truth in Harvest Moon: Friends of Mineral Town