Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
mineral
Category
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Granite
Granite (Felsic intrusive igneous rock)
igneous
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
sedimentary
Red Jasper (Heliotrope family variant)
Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)
sedimentary
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, or Chrysotile)
metamorphic
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Shale (with minor calcite veining)
Clastic sedimentary rock (primarily clay minerals and quartz)
sedimentary
Granite Pebble
Granite (Phaneritic intrusive igneous rock comprising Quartz, Feldspar, and Mica)
igneous
Sandstone (Quartzose Pebble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Gneiss (Metamorphic Rock)
Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)
metamorphic
Gneiss (Metamorphic Cobble)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Vesicular Basalt (Lava Rock)
Vesicular Basalt
igneous
Chalcedony (Agate and Carnelian varieties)
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic Intrusive Igneous Rock (composed of Quartz, Feldspar, and Mica)
igneous
Limestone Gravel
Calcium Carbonate (CaCO3)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Amethyst
SiO2 (Silicon Dioxide)
mineral
Rose Quartz
Silicon dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Ruby (Corundum)
Aluminum oxide (Al2O3) with Chromium traces
mineral
Slag Glass (Cullet Glass)
Amorphous Silica (Industrial byproduct)
mineral
Mica Schist
Schist (Biotite/Muscovite dominant)
metamorphic
Epidotite
Epidotite (Epidote content > 50%)
metamorphic
Moonstone (with Tourmaline/Mica)
Orthoclase/Albite Feldspar (KAlSi3O8 / NaAlSi3O8)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Green Banded Agate
Agate (Variety of Chalcedony/Quartz), SiO2
mineral
Green Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Garnet (Almandine)
Almandine Garnet (Fe3Al2(SiO4)3)
Mineral
Ferruginous Quartz
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
mineral
Hypersthene
Enstatite (Hypersthene variety), (Mg,Fe)SiO3
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Quartz (Milky/Rose variety)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Quartzite (SiO2 with minor impurities)
metamorphic
Banded Agate (Gray/Brown)
Silicon Dioxide (SiO2)
mineral
Sandstone with Liesegang Rings
Arenite with Iron Oxide Liesegang Banding
sedimentary
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
mineral
Bloodstone
Chalcedony (Quartz)
Mineral
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
mineral
Granodiorite
Granodiorite (intermediate plutonic rock)
igneous
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral