Kougetsu (Moon Water).
Ebonite in black and yelow, made by hand.
The image of color: the moon shadow, like a golden dragon on the water face of the river.
Ebonite is a type of resin that has a very long history. It is considered the first “synthetic resin”to become widely used from 19th century. Ebonite, made from ruber and sulfur, is very firm and strong to acid, and changeless, so that is good material for fountain pens.