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3D3DAnodized titanium earrings.
These are silly little Space Needle tourist earrings I got on a trip to Seattle with my son. They are either laser or water-jet cut, I'm not sure how to tell the difference for sure, but if I had to guess I would say water-jet because of the slightly larger diameter of the cut at the start and finish of each line. A laser should cut perfectly. But that's just a guess.
The color comes from anodizing the titanium, as I have written about in my Popular Science Column.
Source: Seattle
Contributor: Theodore Gray
Acquired: 17 June, 2007
Text Updated: 9 November, 2007
Price: $20
Size: 1"
Purity: 98%