![](http://www.alamy.com/thumbs/6/3D0935DB-3BAA-4D1E-A26A-8EEEEB615DB0/2ACJXMH.jpg)
Jasp agate (Silicon dioxide) specimen from Germany.
Size: 4180px × 4180px
Photo credit: © NATURAL HISTORY MUSEUM, LONDON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
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