Sandstone (Ferruginous) rock specimen

Sandstone (Ferruginous)

Arenite (composed primarily of SiO2 with Fe2O3 cement)

sedimentary

Red Jasper rock specimen

Red Jasper

Jasper (Silicon Dioxide, SiO2 with iron oxide impurities)

sedimentary

Granitic Pegmatite (Muscovite and Quartz) rock specimen

Granitic Pegmatite (Muscovite and Quartz)

Pegmatite (KAl2(AlSi3O10)(OH)2 / SiO2)

igneous

Copper Ore with Chrysocolla and Azurite rock specimen

Copper Ore with Chrysocolla and Azurite

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / Cu3(CO3)2(OH)2 (Azurite)

mineral

Conglomerate rock specimen

Conglomerate

Clastic sedimentary rock (Conglomerate)

sedimentary

Chert (Iron-stained) rock specimen

Chert (Iron-stained)

Chert (Microcrystalline Quartz, SiO2)

sedimentary

Jasper rock specimen

Jasper

Silicon dioxide (SiO2)

sedimentary

Chert (Yellow Jasper) rock specimen

Chert (Yellow Jasper)

Silicon Dioxide (SiO2)

sedimentary

Basalt Pebble rock specimen

Basalt Pebble

Extrusive Mafic Igneous Rock

igneous

Chert (Basanite / Flint) rock specimen

Chert (Basanite / Flint)

Microcrystalline Quartz (SiO2)

sedimentary

Yellow Quartzite (Citrine-colored Quartz) rock specimen

Yellow Quartzite (Citrine-colored Quartz)

Silicon Dioxide (SiO2)

metamorphic

Green Slag Glass rock specimen

Green Slag Glass

Amorphous Silicon Dioxide (with metallic impurities)

Igneous (Anthropogenic)

Amber rock specimen

Amber

Succinite (fossilized resin)

mineral

Basalt rock specimen

Basalt

Basalt (Composition primarily Plagioclase feldspar, Pyroxene, and Olivine)

igneous

Orange Calcite rock specimen

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

mineral

Diorite rock specimen

Diorite

Phaneritic intermediate plutonic rock

Igneous

Granite rock specimen

Granite

Phaneritic Plutonic Felsic Rock

igneous

Yellow Calcite rock specimen

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)

mineral

Chert (and Chert-Jasper mix) rock specimen

Chert (and Chert-Jasper mix)

Microcrystalline Quartz (SiO2)

sedimentary

Sandstone rock specimen

Sandstone

Clastic sedimentary rock (primarily SiO2)

sedimentary

Ferruginous Quartz (Iron-stained Quartz) rock specimen

Ferruginous Quartz (Iron-stained Quartz)

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Mineral

Olivine (Peridot) rock specimen

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Mineral

Granodiorite rock specimen

Granodiorite

Granodiorite (containing Quartz, Plagioclase Feldspar, Biotite, and Hornblende)

igneous

Diorite rock specimen

Diorite

Diorite (an intrusive igneous rock)

igneous

Clear Quartz (Rock Crystal) rock specimen

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

mineral

Chert (with Quartz veins) rock specimen

Chert (with Quartz veins)

Microcrystalline Quartz (SiO2)

sedimentary

Quartz Crystal rock specimen

Quartz Crystal

Silicon Dioxide (SiO2)

mineral

Diamond (in Jewelry) rock specimen

Diamond (in Jewelry)

Carbon (C)

mineral

Onyx (Black Onyx) rock specimen

Onyx (Black Onyx)

Silicon Dioxide (SiO2) - Chalcedony variety

Mineral

Cubic Zirconia (in Jewelry) rock specimen

Cubic Zirconia (in Jewelry)

Zirconium Dioxide (ZrO2)

mineral

Cubic Zirconia (as used in jewelry setting) rock specimen

Cubic Zirconia (as used in jewelry setting)

Zirconium dioxide (ZrO2)

mineral

Diamond (appearing in jewelry) rock specimen

Diamond (appearing in jewelry)

Diamond (pure Carbon, C)

mineral

Amber rock specimen

Amber

Succinite (C10H16O)

mineraloid

Citrine rock specimen

Citrine

Silicon Dioxide (SiO2)

mineral

Quartz (Milky or Citrine-tinted) rock specimen

Quartz (Milky or Citrine-tinted)

Silicon Dioxide (SiO2)

mineral

Ironstone Concretion (Moqui Marble variety) rock specimen

Ironstone Concretion (Moqui Marble variety)

Ferruginous Sandstone Concretion

sedimentary

Quartz Pebble rock specimen

Quartz Pebble

Silicon Dioxide (SiO2)

mineral

Red Jasper rock specimen

Red Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz

sedimentary

Quartzite pebble rock specimen

Quartzite pebble

Quartzite (primarily SiO2)

metamorphic

Sandstone (likely Arkosic or Lithic Sandstone) rock specimen

Sandstone (likely Arkosic or Lithic Sandstone)

Clastic Sedimentary Rock (SiO2 with assorted minerals)

sedimentary

Obsidian rock specimen

Obsidian

Volcanic glass (SiO2 - Silicon Dioxide)

Igneous

Moonstone rock specimen

Moonstone

Orthoclase feldspar ((K,Na)AlSi3O8)

mineral