Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Category
Not A Rock (Animated Character)
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Pyrite
Iron Sulfide (FeS2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Dyed Agate
Silicon Dioxide (SiO2)
mineral
Gold in Quartz Matrix
Native Gold (Au) in Quartz (SiO2)
mineral
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Granite
Phaneritic Plutonic Igneous Rock (composed of quartz, alkali feldspar, and plagioclase)
igneous
Carnelian
Carnelian (Chalcedony / Quartz variety, SiO2)
mineral
Gneiss (with Quartzite and Biotite)
Gneiss containing SiO2 (Quartz), K(Mg,Fe)3AlSi3O10(OH)2 (Biotite), and (K,Na,Ca)AlSi3O8 (Feldspar)
metamorphic
Sandstone (likely Arkosic or Lithic)
Clastic Sedimentary Rock (SiO2 with accessory minerals)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Amethyst
Silicon dioxide with iron impurities (SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst
Quartz (Silicon Dioxide with iron impurities), SiO2
mineral
Carnelian
SiO2 (Silicon Dioxide) - Carnelian Agate/Chalcedony
mineral
Garnierite in Matrix
Nickel-bearing Magnesium Silicates (Garnierite)
mineral
Pink Thulite (Zoisite)
Ca2Al3(SiO4)3(OH) - Manganese-bearing Zoisite
mineral
Quartz (likely Herkimer Diamond style)
Silicon Dioxide (SiO2)
mineral
Basalt
Basalt (Mafic volcanic rock)
igneous
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst
Amethyst (SiO2 with iron impurities)
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Amazonite
Amazonite (KAlSi3O8)
mineral
Amazonite
Microcline (KAlSi3O8) with Pb impurities
mineral
Moss Agate
Silicon Dioxide (SiO2) with Chlorite/Oxide inclusions
mineral
Dyed Agate
Silicon Dioxide (SiO2) with synthetic dyes
mineral
Amazonite
Potassium Feldspar (Microcline), K(AlSi3O8)
mineral
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Amethyst Cluster
Amethyst (Silicon Dioxide), chemical formula: SiO2
mineral
Carnelian
Carnelian (Chalcedony/Quartz, SiO2)
mineral
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Common Opal (Green Opal)
Hydrated Silicon Dioxide (SiO2·nH2O)
mineral
Vanadinite
Vanadinite (Pb5(VO4)3Cl)
mineral
Moonstone
Orthoclase Feldspar (KAlSi3O8) or Albite mixtures
mineral
Limonite (Iron Ore)
Limonite; FeO(OH)·nH2O
mineral
Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Basalt River Cobble
Basalt (Mafic Extrusive Igneous Rock)
igneous
Basalt (River Pebble)
Basalt (Aphanitic Mafic Volcanic Rock)
Igneous
Amazonite
Potassium aluminum silicate (KAlSi3O8)
mineral