Lies of P Hidden Moonstone farming isn’t exactly obvious in the game. You can get these resources as drops at secluded places but the way to get a consistent source isn’t particularly clear. Also, in a Soulslike, you can say goodbye to your chances of defeating enemies if you do not adapt your play style and continuously upgrade your weapons. The Hidden Moonstone in Lies of P is one such material that comes in handy when it comes to upgrading your weapons — offering small upgrades to your blades.
It upgrades your normal blade statistic up to +3 which is quite useful when it comes to landing hits on your enemies. Being one of the earliest materials that you will require in Lies of P, hidden moonstones are not that difficult to find once you follow this guide.
That is because you can buy infinite Hidden Moonstones from Polendina provided you have the required Ergo. However, there is one catch: you can only buy Hidden Moonstones from Polendina once you reach Chapter IV and find the Krat Supply Box in the St. Frangelico Cathedral. This will expand Polendina’s shop and make Hidden Moonstones available for Purchase.
So, bear that in mind so that your time and efforts are not wasted.
How to find the Krat Supply box and successfully engage in Lies of P Hidden Moonstone Farming
- First, get to the nearest Stargazer.
- Now, you need to fast travel to St. Frangelico Cathedral.

- Turn around and enter the elevator which is in line with the stargazer.
- Lift the lever and wait till you reach the floor above.

- Move straight ahead and take your first left. You will find a passage because of a broken brick wall.

- Turn left again and reach the red chest at the end of the room just in front of the wall.
- Open it to obtain the Krat Supply box

- Now go to Hotel Krat and give the Krat Supply Box to Polendina.
- Select the ‘Add shop goods’ alternative.

- Select the ‘Hand Over the Krat Supply Box’ alternative.
- After ending the dialogue. Interact with him again. This time select the Purchase Alternative.
- You will now find the Hidden Moonstone in Polendina’s inventory listed for 300 Ergos.

- Keep in mind that you can purchase as many of these as you want as long as you have enough Ergos.
- Upgrade your weapons!
If you ever run out of Ergos, here are all the locations where you can find Hidden Moonstones in Lies of P.