Jasper is form of chalcedony, an opaque impure variety of silica, which is often speckled and veined.

---

Size: 3567px × 4899px
Photo credit: © NATURAL HISTORY MUSEUM, LONDON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: agate, background, brown, chalcedony, colour, crystal, crystalline, cut, cut-, deposit, deposits, earth, gem, gemstone, geological, geology, jasper, layer, layered, layers, marbled, marking, microcrystal, microcrystalline, mineral, mineralogy, polished, quartz, rock, rocks, schiller, science, shiny, silica, silicate, specimen, vein, volcanic, white