Benu Luminous Briolette Pen Holder
Benu's Briolette pen holder fits their Briolette series pens perfectly. The luminous pen holder glows in the dark, just like the luminous pens. It is made of resin, and will make a nice display on your desk.
Although it is meant for the Briolette, this pen holder works with many other fountain pens that are a little fatter and have a slightly tapered profile at the tip, e.g. the TWSBI Diamond 580 and Mini. The opening measures about 15mm wide at the top, and 45mm deep.