Mineral Or Sedimentary Rock (With Mineral Inclusions)

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Sandstone (Cross-bedded Drill Core)

Clastic Sedimentary Rock (primarily SiO2)

Sandstone (Quartzose Sandstone Pebble)

Arenite (primarily SiO2)

Conglomerate

Conglomerate (Clastic Sedimentary Rock)

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with inclusions of Dumortierite or Magnesio-riebeckite

Halite (Rock Salt)

Halite (Sodium Chloride, NaCl)

Banded Sandstone (Quartzite-rich)

Clastic Sedimentary Rock (SiO2 with Iron Oxide impurities)

Gneiss (Metamorphic Rock)

Gneiss

Milky Quartz

Silicon Dioxide (SiO2)

Red Jasper

Silicon dioxide (SiO2)

Sandstone (specifically an Iron-Concretion)

Arenite with Iron Oxide (Limonite/Goethite) cementation

Agate (specifically Waterline or Onyx-type Agate)

Silicon Dioxide (SiO2) - variety Chalcedony

Sandstone (Greywacke/Lithic Sandstone)

Arenite / Lithic Sandstone

Sandstone (Pebble)

Sandstone (arenite, arkose, wacke depending on composition)

Gneiss

Gneiss (High-grade metamorphic rock)

Quartz Druzy (on Calcedony/Quartz base)

Silicon Dioxide (SiO2)

Jasper (Red/Brown Variety)

Jasper (Silicon Dioxide, SiO2 plus Iron Oxide impurities)

Banded Agate (Tumbled)

Cryptocrystalline Quartz (SiO2)

Yellow Jasper (Iron-stained Quartzite/Chert)

Silicon Dioxide (SiO2) with Hydrated Iron Oxide (Goehite/Limonite) inclusions

Sandstone Concretion

Sandstone (Sedimentary Rock) with silica or calcite cement

Ferruginous Sandstone

Clastic sedimentary rock (SiO2 with Fe2O3/FeO(OH) cement)

Zebra Jasper (Zebra Stone)

Silicon Dioxide (SiO2) with iron oxide and manganese inclusions

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Banded Gneiss (with Quartz Vein)

Gneiss (Metamorphic rock of varying mineralogy)

Andesite

Andesite (Intermediate Volcanic Rock)

Gneiss (specifically a Banded Gneiss pebble)

Gneiss (High-grade Regional Metamorphic Rock)

Rose Quartz

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Sandstone (Ferruginous)

Arenite with Iron oxide staining (SiO2 with Fe2O3)

Biotite Schist

Biotite Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)

Sunstone

Oligoclase (Plagioclase Feldspar subclass), (Ca,Na)(Al,Si)4O8

Sandstone (Quartzose)

Arenite (primarily SiO2)

Fluorite in Matrix

Fluorite (CaF2) within a host rock matrix

Conglomerate

Conglomerate (Detrital sedimentary rock)

Fossiliferous Shale (with Vertebrate Bones)

Laminated Mudstone containing Fossilized Bone (Apatite)

Quartz (on matrix)

Quartz (Silicon Dioxide, SiO₂)

Sandstone (Ferruginous)

Arenite (Fe-rich)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Blue Kyanite

Kyanite (Al2SiO5)

Conglomerate (River Rock Aggregate)

Conglomerate (Lithic-clast conglomerate)

Banded Agate (Orca Agate)

Silicon Dioxide (SiO2) - Chalcedony variety

Slate

Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)