A while back I was sent this cool material by a customer who asked that I turn it into a pen. I discovered that this material (a marble white with real gold foil embedded in it) is made of polyresin, which I had some time ago sworn off using because of brittle nature and its tendency to shatter - while turning, and when dropped on a hard surface.
Fortunately I happened to have a piece of pearly white alumilite on hand, which has none of those nasty tendencies, so I used that for the grip section, and for an insert into the barrel from which to cut the threaded tenon. The gold-marble still managed to split a couple of times along the gold foil while turning, but nothing a bit of handy CA couldn't deal with.
In the end, I am quite happy with how it came out. I had planned to make one of my 'purity' style pens (cap all one diameter, barrel all one slightly smaller diameter, rounded ends), but the recurrent cap splits forced me to finish it off with a slightly different shape. In fact, I kind of like it, and will probably make more of these. But I don't have a name for this style yet. Will have to think of something.
With the little bit of remaining gold-marble, I made a little pen rest so that this pen can studiously avoid tumbling onto hard surfaces and shattering.
The pen is here posing with what seemed like a very appropriate nib - an 18K fine, to match the gold veining.
The fill system is as cartridge/converter as usual.
Thanks for looking!