Bumblebee Jasper
Calcite-bearing Volcanic Tuff containing Sulfur and Arsenic (Orpiment/Realgar)
sedimentary
Category
Non Geological
Browse non geological specimens identified by the Rock Identifier community.
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Conglomerate
Clastic sedimentary rock (Polymictic Conglomerate)
sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Sandstone
Arenite (SiO2 based with mineral cement)
sedimentary
Diamond inlaid in Jewelry
Carbon (C)
mineral
Granite
Phaneritic Felsic Igneous Rock
igneous
Clear Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Pearl
Aragonite and Calcite (CaCO3) with Conchiolin
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Honey Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Pyrite (Cube variety)
Iron Sulfide (FeS2)
mineral
Fulgurite
Fulgurite (Lechatelierite-rich variety)
metamorphic
Pearl
Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3
mineral
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Yellowish variety)
Silicon Dioxide (SiO2)
mineral
Red Siltstone
Siltstone (primarily quartz and feldspar sized 0.0039 to 0.0625 mm)
sedimentary
Bauxite
Bauxite (Al2O3·nH2O)
sedimentary
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Dyed Magnesite (often sold as Red Turquoise or Howlite)
Magnesium Carbonate (MgCO3)
mineral
Milky Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
not a natural rock
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Garnet (likely Almandine or Pyrope)
Garnet Group, Nesosilicates (Complex chemistry, e.g., Almandine: Fe3Al2Si3O12)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Galena
Lead Sulfide (PbS)
mineral
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Muscovite Mica in Quartz Matrix
Muscovite (KAl2(AlSi3O10)(OH)2) in Quartz (SiO2)
mineral
Coarse-Grained Marble
Recrystallized Limestone (Major component: CaCO3)
metamorphic
Rose Quartz
Silicon Dioxide with traces of Titanium, Iron, or Manganese (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral