![](http://www.alamy.com/thumbs/6/EC7338F4-B49D-4FEE-A567-ED1677BE068B/DTFD5P.jpg)
Agate
An agate (Silicon dioxide) specimen from Germany.
Size: 4064px × 2704px
Photo credit: © Natural History Museum, London / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: agate, background, chalcedony, crystalline, dioxide, geological, geology, mineral, mineralogy, quartz, shot, silicate, silicon, specimen, studio, studioshot, tectosilicate, white