Alchemic discussion:
This is the way you separate salt out of sea water.
It's also a defense mechanism that holds trauma and disease and mental blocks in the body. Tears are an example of removing these blocks (crystallization). Crying is a physical display of these blocks and knots being untied within us.
Crystallization is also something desirable when one desires to solidify and purify.
See: | Alchemy | Harold's Credentials | The Great Work | Physical Alchemy on Silver | Lead into Gold | The Stone | LUXSource-ry | Lapis - Harold is Successful | Transformative Waters |