Pyrite
Iron Disulfide (FeS2)
mineral
Category
Mineral (Synthetic Glass)
Browse mineral (synthetic glass) specimens identified by the Rock Identifier community.
Learn about Mineral (Synthetic Glass) in the encyclopedia
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Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
mineral
Diamond
Carbon (C)
mineral
Sandstone (Ferruginous)
Arenite (Fe2O3 enriched)
sedimentary
Quartz with Iron Oxide Inclusions
Silicon dioxide with limonite/hematite (SiO2)
mineral
Clear Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Banded Sandstone (Beach Pebble)
Quartz Arenite Sandstone
sedimentary
Quartz (Rose or Milky variety fragment)
Silicon Dioxide (SiO2)
mineral
Mahogany Obsidian
Volcanic Glass (Silicate: SiO2 + Fe2O3)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Jaspery variety)
Microcrystalline Quartz (SiO2)
sedimentary
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Raw / Unpolished)
Silicon Dioxide (SiO2)
mineral
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Sandstone
Arenite (SiO2 based typically)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Tumbled quartz-rich pebble
Microcrystalline quartz (SiO₂), possibly weathered chert or chalcedony
mineral
Black Opal (Triplet)
Hydrated Silica (SiO2·nH2O)
mineral
Fluorite (likely Green Fluorite variant)
Calcium Fluoride (CaF2)
mineral
Clear quartz sphere
Quartz (silicon dioxide, SiO₂)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace impurities of titanium, iron, or manganese
mineral
Rose Quartz
Quartz (Silicon Dioxide, SiO2) with trace inclusions of dumortierite
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Lepidolite
Lepidolite - K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Cloudy Quartz (or Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Sandstone
Clastic Sedimentary Rock
sedimentary
Milky quartz (rose-tinted quartz)
Quartz, silicon dioxide (SiO₂)
mineral
Smoky Quartz
Silicon Dioxide (SiO₂)
mineral
Rose Quartz
Rose Quartz (SiO2 with trace Ti, Fe, or Mn)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Chert (specifically Flint or Gray Chert)
Silicon Dioxide (Microcrystalline Quartz), SiO2
sedimentary
River Pebble (likely Quartzite or Quartz)
Quartzite (SiO2)
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary
Polished black stone, likely black obsidian
Obsidian (volcanic glass), primarily silica-rich rhyolitic composition
igneous