To make Moon Water:

Put a crystal in a clear jar and cover with purified water.
Wait for a clear night of the full moon and at the exact time of sundown place the jar outdoors in a moonlit area.
Bring the jar in at dawn.
The water is now filled with lunar potency.
or
Put a moonstone in the jar,
fill with fresh water and leave out for the 3 nights of the full moon, the night before,
the night of and the night after the full moon.
or
to make New Moon Water
Fill a glass jar with fresh water and an obsidian or onyx.
Place outside for the 3 nights of the New Moon