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3D3DTitanium dioxide powder.
Titanium dioxide is the white in white paint and the opaque in most other paints. Chances are if you look up from your screen, you'll be looking at a wall covered in titanium dioxide. It is cheap and common, unlike titanium metal, which is expensive and not seen nearly as often. This is because turning titanium dioxide (which is one of the main ores of titanium) into its metal form is difficult and expensive, as is working the metal once you have refined it.
Source: eBay seller arkie-annie
Contributor: Theodore Gray
Acquired: 28 February, 2009
Text Updated: 1 March, 2009
Price: $40
Size: 2"
Composition: TiO2