Red Garnet
Pyrope-Almandine series (Mg3Al2(SiO4)3 to Fe3Al2(SiO4)3)
mineral
Category
Man Made Silicate (Anthropogenic Glass)
Browse man made silicate (anthropogenic glass) specimens identified by the Rock Identifier community.
Rhodonite
Rhodonite (MnSiO3)
Mineral
Limestone
Calcium carbonate ( преимущественно CaCO3)
sedimentary
Chert (specifically Flint or Dark Chalcedony)
Silicon Dioxide (SiO2)
sedimentary
Grey Agate (Banded Chalcedony)
Agate (Silicon Dioxide - SiO2)
mineral
Quartz Druzy Geode
Silicon Dioxide (SiO2) - Crystalline Variety
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silica / Silicon Dioxide), SiO2
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace Titanium, Manganese, or Iron
mineral
Rose Quartz
Rose Quartz (SiO2 with traces of Titanium, Iron, or Manganese)
mineral
Rose Quartz
Silicon dioxide with traces of titanium, iron, or manganese (SiO2)
mineral
Rose Quartz
Silicon Dioxide with traces of titanium, iron, or manganese (SiO2)
mineral
Granite
Granite
igneous
Pegmatite (likely Granitic Pegmatite)
Pegmatite (a coarse-grained igneous rock, often with granitic composition)
igneous
Quartz (in a rock matrix)
Quartz (SiO2)
mineral
Brown Jasper
Jasper (a cryptocrystalline variety of Quartz, SiO2)
Mineral, specifically a variety of Quartz
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Olivine (likely Peridot variety)
Olivine Mineral Group (specifically Forsterite-Fayalite solid solution series); Chemical formula: (Mg,Fe)2SiO4
Mineral
Yellow Quartz (Citrine Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Quartzite / Sandstone / Chert Mix
Silicon Dioxide (SiO2)
sedimentary and metamorphic
Sandstone
Arenite (primarily composed of SiO2)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Amethyst
Silicon Dioxide (SiO2) with traces of Iron and Manganese
mineral
Chert (Brown Variety)
Silicon dioxide (SiO2)
sedimentary
Biotite Schist
Biotite-rich Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)
metamorphic
Red Quartzite
Quartzite (SiO2 with iron oxide impurities)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Mahogany Obsidian
Volcanic Glass with Hematite/Magnetite inclusions (SiO2 + Fe2O3)
Igneous
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Rose Quartz
Quartz (SiO2) with trace amounts of Titanium, Iron, or Manganese
mineral
Agate (Dyed High-Grade Polished Slice)
Silicon dioxide (SiO2), Chalcedony crystal variety
mineral
Jasper Geode
Silicon Dioxide (SiO2) with impurities
sedimentary
Yellow Agate
Agate (Microcrystalline Silicon Dioxide, SiO2)
mineral
Chert (and Chalcedony/Agate mixture)
Microcrystalline Quartz (SiO2)
sedimentary
Carnelian Agate
Silicon Dioxide (SiO₂), a variety of Chalcedony
mineral
Agate (translucent pebble)
Silicon dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions), SiO2
sedimentary
Chert
Siliceous sedimentary rock (predominantly microcrystalline quartz, SiO2)
Sedimentary
Rutilated Quartz
Quartz with Rutile Inclusions (SiO2 with TiO2 inclusions)
Mineral
Red Jasper (Opaque Chalcedony)
Jasper / Silicon Dioxide (SiO2) with Ferric Iron inclusions
mineral