An experiment adding gold wire into the surface of the pen body. The material is an incredible deep black when polished, it comes from Europe. I use this as my own pen filled with with chocolate brown ink.
Based on the responses I will make 2 of these (also with a brass 'dot' in the ends). The wiring can be gold, silver, anodized blue, red or yellow and I have various special copper wires available. The wires can be fine or medium.
I can make them on request