Citrine Quartz rock specimen

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

mineral

Dragon Blood Jasper (Lizard Stone/Septarian Chalcedony) rock specimen

Dragon Blood Jasper (Lizard Stone/Septarian Chalcedony)

Epidote with Black Hornblende and White Quartz mixture

metamorphic

Fossiliferous Limestone rock specimen

Fossiliferous Limestone

Fossiliferous Limestone (CaCO3)

sedimentary

Clear Quartz rock specimen

Clear Quartz

Silicon Dioxide (SiO2)

mineral

Selenite (Gypsum) rock specimen

Selenite (Gypsum)

Hydrous calcium sulfate (CaSO4·2H2O)

mineral

Selenite (Satin Spar) rock specimen

Selenite (Satin Spar)

Gypsum (CaSO4·2H2O)

mineral

Milky Quartz rock specimen

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Chert (Yellow Jasper variant) rock specimen

Chert (Yellow Jasper variant)

Microcrystalline Quartz (SiO2)

sedimentary

Petrified Wood rock specimen

Petrified Wood

Silicified Wood (SiO2)

sedimentary

Milky Quartz with Chlorite/Mica inclusions rock specimen

Milky Quartz with Chlorite/Mica inclusions

Silicon Dioxide (SiO2) with inclusions

mineral

Milky Quartz with Mineral Inclusions rock specimen

Milky Quartz with Mineral Inclusions

Silicon Dioxide (SiO2) with miscellaneous inclusions

mineral

Gneiss rock specimen

Gneiss

Gneiss

metamorphic

Calcite rock specimen

Calcite

Calcium Carbonate (CaCO3)

mineral

Halite (Rock Salt) rock specimen

Halite (Rock Salt)

Halite (Sodium Chloride, NaCl)

mineral

Marble (Calcitic) rock specimen

Marble (Calcitic)

Metamorphosed Limestone (CaCO3)

metamorphic

Granite rock specimen

Granite

Intrusive igneous rock (Acidic)

igneous

Quartz Geode (Smoky Quartz) rock specimen

Quartz Geode (Smoky Quartz)

Silicon Dioxide (SiO2)

mineral

Calcite rock specimen

Calcite

Calcite (Calcium Carbonate, CaCO3)

mineral

Quartz Geode rock specimen

Quartz Geode

Silicon Dioxide (SiO2)

mineral

Marble rock specimen

Marble

Recrystallized Calcite / Dolomite (CaCO3)

metamorphic

Quartz Geode rock specimen

Quartz Geode

Silicon Dioxide (SiO2) within a geode

mineral

Aventurine rock specimen

Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

metamorphic

Chert (Flint) rock specimen

Chert (Flint)

Microcrystalline Quartz (SiO2)

sedimentary

Milky Quartz rock specimen

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral

Milky Quartz in Matrix rock specimen

Milky Quartz in Matrix

Silicon Dioxide (SiO2)

mineral

Milky Quartz rock specimen

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Rose Quartz rock specimen

Rose Quartz

Silicon dioxide (SiO2) with trace titanium, manganese, or iron

mineral

Wonderstone rock specimen

Wonderstone

Banded Rhyolite (SiO2 with impurities)

igneous

Quartz Vein in Host Rock rock specimen

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Metasedimentary or Igneous matrix

mineral

Emerald In Matrix rock specimen

Emerald In Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

mineral

Chrysocolla rock specimen

Chrysocolla

Chrysocolla; (Cu,Al)2H2Si2O5(OH)4·nH2O

mineral

Breccia rock specimen

Breccia

Breccia (Clastic Sedimentary Rock)

sedimentary

Quartz Vein in Host Rock rock specimen

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within a metamorphic matrix

metamorphic

Quartz vein in Host Rock rock specimen

Quartz vein in Host Rock

Crystalline Silicon Dioxide (SiO2) in Lithic Matrix

metamorphic

Fancy Jasper (Bloodstone variety) rock specimen

Fancy Jasper (Bloodstone variety)

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary

Rutilated Quartz rock specimen

Rutilated Quartz

Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions

mineral

Golden Healer Quartz rock specimen

Golden Healer Quartz

Silicon Dioxide (SiO2) with limonite/hematite inclusions

mineral

Orange Calcite rock specimen

Orange Calcite

Calcium Carbonate (CaCO3)

mineral

Green Aventurine rock specimen

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

metamorphic

Chert (Jasper variation) rock specimen

Chert (Jasper variation)

Microcrystalline Quartz (SiO2)

sedimentary

Yellow Calcite rock specimen

Yellow Calcite

Calcium Carbonate (CaCO3)

mineral

Chert (Jasper/Flint variant) rock specimen

Chert (Jasper/Flint variant)

Microcrystalline Quartz (SiO2)

sedimentary