Masaru Emoto and his lab freeze water and then observe it with a microscope:
…we strenuously observed crystals of tap water, river water, and lake water. From the tap water we could not get any beautiful crystals. We could not get any beautiful ones from rivers and lakes near big cities, either. However, from the water from rivers and lakes where water is kept pristine from development, we could observe beautiful crystals with each one having its own uniqueness.
The observation was done in various ways:
- Observe the crystal of frozen water after showing letters to water
- Showing pictures to water
- Playing music to water
- Praying to water
via masaru emoto.
lucky klover 
So interesting! Thanks for sharing! I wonder what power water crystals look like (expose alkaline water in a clear crystal glass to sunshine with a positive message taped to the glass facing the water). Freeze and examine the crystals!