These special and considered relatively rare crystals, contain small pockets of water bubbles which can be observed without the need for a microscope. 
As the Quartz is forming, the water becomes trapped when the crystal has cooled down, resulting in the beautiful water bubbles often considered as ancient water. 
Enhydro Quartz is said to help with opening our Akashic records to access past lives, and also cleanses the mind, body and spirit during meditation.
This piece weighs 28g and it’s likely you’ll find more than 1 bubble as they have a tendency to move. 
The pen can be removed with warm water.