Agate (Silicon dioxide) specimen from Bristol, England.

---

Size: 4180px × 4180px
Photo credit: © NATURAL HISTORY MUSEUM, LONDON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: agate, background, black, brown, chalcedony, chemistry, colour, cross, crust, crystal, crystalline, crystallized, cut, cut-, earth, england, gemstone, geology, grey, layer, layered, microcrystalline, mineral, mineralogy, nature, object, orange, pattern, polished, rock, science, section, silica, silicate, single, slice, specimen, stone