Aren't Jaspers ROCKS, while agates are just cryptocrystalline(ultra microscopic crystals) polymorphs of Quartz? Also aren't Jaspers bioacumulated sediments, being composed of SiO2 rich skeletal remains of radiolarians, then compacted through diagenesis and forming either Radiolarites or Jaspers, then brought back through tectonic movement? I'd say key difference is one is a rock, one is a mineraloid.

@@mircea-andreigherasim9608 Jasper is neither necessarily bioacumulated nor necessarily clastic sedimentary. It can form in fractures as a type of chemical sedimentation too. Yes, you could say "jasper is a rock", but since agates tend to be sloid mixtures of various fibrous silica varieties, as well as other inclusive elements or minerals, one could accurately call them "rocks" as well. I was going for the 'fibrous' vs. 'granular' distinction, which is always the case. Also, you wouldn't say polymorphs of quartz, you would say polymorphs of silica, as all the stages of polymorph from opal, moganite, cristobalite, and chalcedony are all SiO₂ but exhibit different crystal lattice orientations, hence making them different minerals. Quartz occurs as only 2 distinct polymorphs, 'high' and 'low'.

@@thirstfast1025 I see your point noww, sorry for the missunderstanding, great explenation

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