Peridot
Olivine ((Mg,Fe)2SiO4)
Category
Browse anthropogenic (man made industrial byproduct) specimens identified by the Rock Identifier community.
Peridot
Olivine ((Mg,Fe)2SiO4)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Milky Quartz (Tumbled)
Quartz (Silicon Dioxide, SiO2)
Limestone
Calcium Carbonate (CaCO3)
Granite Pebble
Granite (composed primarily of Quartz, Feldspar, and Mica)
Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
Clear Quartz
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
Sandstone
Arenite
Sandstone
Arenite (composed primarily of SiO2)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (likely Graywacke or Arkosic varieties)
Arenite (composed primarily of SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Diamond
Diamond (C)
Quartzite
Quartzite (SiO2)
Diamond
Diamond (C)
Larimar
Pectolite (a blue variety of Pectolite)
Granite
Granite (Felsic Plutonic Rock)
Granite
Phaneritic Plutonic Felsic Rock (SiO2 > 69%)
Limestone (with potential fossil inclusions)
Calcium Carbonate (CaCO3)
Limestone (Grey and White specimens)
Calcium Carbonate (CaCO3)
Rose Quartz
Silicon Dioxide with traces of Titanium, Iron, or Manganese (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Druzy Quartz)
Silicon Dioxide (SiO2)
Blue Kyanite
Kyanite (Al2SiO5)
Green Druzy Quartz (Prasiolite)
Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)
Quartz (Iron-Stained Quartz Pebble)
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Fluorite (Purple Fluorite in Matrix)
Fluorite (Calcium Fluoride, CaF2)
Granite
Granite (a common term for a felsic intrusive igneous rock)
Sandstone
Arenite (SiO2 based with various mineral cements)
Chert (Chalk-associated Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Granite
Felsic Intrusive Igneous Rock
Malachite
Malachite (Cu2CO3(OH)2)
Diamond
Diamond (a metastable allotrope of carbon, C)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Green Apophyllite and Stilbite on Quartz Cluster
Apophyllite-(K) (KCa4(Si8O20)(F,OH)·8H2O), Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O), Quartz (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Sandstone (likely Arkosic)
Clastic Sedimentary Rock
Sandstone
Arenite (primarily SiO2 with trace Fe2O3)
Sandstone (Ferruginous)
Arenite (Fe2O3 stained)