Quartz (Crystal Point/Fragment)
Silicon Dioxide (SiO2)
mineral
Category
Antropogenic (Man Made Glass Byproduct)
Browse antropogenic (man made glass byproduct) specimens identified by the Rock Identifier community.
Learn about Antropogenic (Man Made Glass Byproduct) in the encyclopedia
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Rose Quartz Druzy
Silicon Dioxide (SiO2)
mineral
Quartz (Rose/Pink variety)
Silicon Dioxide (SiO2)
mineral
Citrine or Yellow Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartzite
Metamorphic Quartz (SiO2)
metamorphic
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Obsidian (Apache Tear)
Amorphous Volcanic Glass (SiO2 + impurities)
igneous
Chert (Jasper variation)
Silicon dioxide (SiO2)
sedimentary
Citrine
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz (Agate/Chalcedony variety)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide with trace inclusions (SiO2)
mineral
Granite Pebble (River Rock)
Phaneritic Felsic Igneous Rock
igneous
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Black Opal (Triplet)
Hydrated Silica (SiO2·nH2O)
mineral
Diamond (or Cubic Zirconia)
Carbon (C) / Cubic Zirconium Dioxide (ZrO2)
mineral
Uncertain rounded gray stone
Possibly granite, gneiss, or a glacially transported granitoid
igneous
Obsidian (likely snowflake or smoky obsidian fragment)
Volcanic glass; predominantly rhyolitic silica glass (SiO₂-rich)
igneous
Fluorite
Calcium fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Halite
Sodium Chloride (NaCl)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Metamorphic rock predominantly composed of Quartz (SiO2)
metamorphic
Milky Quartz with Mineral Inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Chert Nodules in Limestone
Chert (Cryptocrystalline Quartz, SiO2)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2)
gemstone
Diamond (or Diamond Simulant)
Carbon (C) or Zirconium dioxide (ZrO2) for CZ
gemstone
Quartzite Pebble
Quartzite (mostly SiO2)
metamorphic
Quartzite (Gold/Yellow)
Quartzite (SiO2)
metamorphic
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Pumice
Pumice (Volcanic Rock)
igneous
Yellow Quartz / Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Polished red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides.
mineral
Quartzite
Metamorphic Quartzite (primarily SiO2)
metamorphic
Quartzite
Metamorphic Quartzite (SiO2-rich rock)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Potassium Feldspar (Orthoclase / Microcline)
KAlSi3O8
mineral