The wavy lines and immense blue color from the lacquer on the pen body, if used by a person with the Water element, there is nothing more suitable than this Starwalker Cool Blue pen.
A fairly familiar version to pen collectors, however, this Cool Blue pen model is becoming increasingly rare because the company has discontinued production. Sometimes you will see the pen in a dark blue color, sometimes a fresh blue color, all thanks to the lacquer that is skillfully applied to the pen, interacting as if playing with light.
The blue on this pen is still very popular, because almost no other current version can express the depth, freshness and many shades of blue like this. This is a very beautiful pen that you can display and use as a very valuable gift.