Ruthenium Very fine powder technically sponge
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Very fine powder (technically "sponge").
This is one of the finest powders I've seen: Very, very powdery. It's also a very unusual color, somehow. Lighter than most powders, in a chocolaty sort of way. Think coffee with a whole lot of milk in it, but less brown and more gray. And of course it's no doubt very pure.
Source: David Franco
Contributor: Ed Pegg Jr
Acquired: 16 August, 2002
Price: $22
Size: 0.5"
Purity: 99.99%
Sample Group: Powders