Iridium

Reduced Iridium Powder in Ampoule
Source:  Traded, Friend
Purity:  99.9%

This Iridium powder was apparently reduced from another solution.  It is very fine, and is sealed to prevent oxidation.  Not that it would oxidize very much - I believe Iridium is almost considered a noble metal.

Iridium Wire
Source:  Found, Spectroscopy Lab Cleanout
Purity:  99.9%

This Iridium wire shows off the metal's ability to resist corrosion - it is as shiny as it ever was.  I don't quite have enough to get a good feel for its properties, but it's something.