Drawing it is indeed easy, if you’ve got carbide draw plates.
It will cause rapid wear on steel ones, and is a bit “sticky” to
draw as well, making really fine wire a bit tricky to draw
sometimes. And it work hardens only slowly. But annealing it
requires heating it under a high vaccuum or in a completely inert
gas atmosphere, not something most of us are equipped to do.
It’s not called a “reactive” metal for nothing… Normal torch
annealing or a normal furnace environment will cause a very
thick, essentially destructive oxide layer to form. Not too much
good after that when you’re talking about wanting a 28 guage
annealed wire, presumably capable of being anodized to desired
colors… As to it’s comparison with silver, I’d say it’s a good
deal different. Tougher, stiffer, harder to work in general.
Silver is a VERY plastic and malleable metal. Niobium isn’t
quite so simple to work. And compare the effort it takes to
polish the stuff sometime. Niobium is every bit as much work,
if not a bit more work, as polishing platinum, when you need a
really good finish.