This pen is made from the material Corian, developed by DuPont as a composite material resembling stone, this turns down to a smooth finish
This particular one is made with a Blue Grey speckled effect Quartz, and is finished with an Antique Copper mechanism.
All of my products are made as a part time hobby, so nothing is mass produced.
Please see my other listings for a selection of Pens, Pencils, Rings and various custom products
Related refills:
https://www.ebay.co.uk/itm/224190584859?var=&ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649