High purity crystals() | |||
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High purity crystals. (External Sample) These are industrially produced high-purity calcium crystals of the highest grade. They are shiny, soft enough to tear apart by hand, and sealed in a glass ampule because they would react with air and tarnish within seconds. Unfortunately I cannot reveal their location as the company that makes and uses them in their work is very sensitive about trade secrets: I had them on loan for a few weeks to photograph for a film project, then sadly they were destined to be turned into something quite a bit less beautiful. Location: Anonymous Photographed: 10 April, 2005 Size: 1" Purity: >99.9% | |||
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