Non Geological

Garnet

Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3

Chert (containing Flint nodules)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chakra Stone Bracelet (mixed gemstones)

Multi-mineral/Gemstone assembly (primarily Quartz variety beads)

Pyrite in Quartz

Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)

Quartz Crystal Point

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Milky Quartz

Silicon Dioxide (SiO2)

Granite

Granite (Phaneritic intrusive igneous rock)

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Beryl (likely Aquamarine or Green Beryl)

Beryllium aluminum silicate (Be3Al2Si6O18)

Milky Quartz

Silicon Dioxide (SiO2)

Blue Aventurine

Quartzite with Dumortierite inclusions (SiO2)

Quartz (Crystal)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon dioxide (SiO2)

Granite

Phaneritic Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)

Sandstone

Arenite (SiO2 primarily)

Fluorite

Calcium Fluoride (CaF2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Honey Calcite

Calcium Carbonate (CaCO3)

White Jade (Nephrite or Jadeite)

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)

Quartz / Quartz Cluster

Silicon Dioxide (SiO2)

Garnet (Almandine or Spessartine likely)

Garnet Group Minerals (e.g., Almandine Fe3Al2(SiO4)3, Pyrope Mg3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3)

Garnet (likely Almandine or Pyrope)

Garnet Group (e.g., Almandine: Fe3Al2(SiO4)3; Pyrope: Mg3Al2(SiO4)3)

Calcite

Calcite (CaCO₃, Calcium Carbonate)

Calcite

Calcite (CaCO 3)

Red Jasper (possibly)

Jasper (a variety of Chalcedony, SiO2)

Rose Quartz

Silicon Dioxide (SiO2)

Schist (Garnet-Mica Schist)

Garnetiferous Mica Schist (primarily Muscovite/Biotite and Almandine Garnet)

Basalt with Caliche Crust

Aphanitic Mafic Igneous Rock with Calcium Carbonate (CaCO3) coating

Epidote in Granite Gneiss

Epidote bearing Orthogneiss (Ca2(Al,Fe)3(SiO4)3(OH))

Banded Iron Formation (BIF)

Banded Iron Formation (predominantly Hematite, Magnetite, and Chert/Quartz)

Chert (specifically White Chert or Novaculite)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Banded Iron Formation (Jasper-Hematite)

Banded Iron Formation (BIF); composition primarily Hematite (Fe2O3) and Chalcedony/Quartz (SiO2)

Chert Nodule

Chert (SiO2)

Brachiopod Fossil in Shale

Phylum Brachiopoda (often species of Order Spiriferida or Rhynchonellida)

Sandstone with Bedding Planes

Arenite (Sedimentary rock composed primarily of sand-sized minerals)

Petrified Wood

Silicified Wood (SiO2)

Amphibolite with Hornblende

Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)

Selenite (Satin Spar)

Gypsum (CaSO4·2H2O)