Hematite
Hematite (Fe2O3)
mineral
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Chalcopyrite
CuFeS2
mineral
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Clastic sedimentary rock (primarily quartz arenite)
sedimentary
Granite
Intrusive Igneous Rock
igneous
Lepidolite
K(Li,Al)3(Al,Si,4)10(O,F,OH)2
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Granite
Intrusive Igneous Rock
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Apatite
Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Granite
Felsic intrusive igneous rock
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Limestone
Sedimentary Rock (Primarily CaCO3)
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Amethyst
Silicon Dioxide (Quartz variety), SiO2
mineral
Gemstone Ring
N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ
gemstone
Emerald
Beryl (Be3Al2(SiO3)6)
gemstone
Granite
Intrusive Igneous Rock (composed primarily of quartz, alkali feldspar, and plagioclase)
igneous
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Black Onyx
Chalcedony (SiO2)
gemstone
Gemstone Ring
Various (Likely Glass, Cubic Zirconia, or assorted semi-precious stones)
gemstone
Satin Spar Selenite
Gypsum (CaSO4·2H2O)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Ulexite
NaCaB5O6(OH)6·5H2O
mineral
Diamond
Carbon (C)
gemstone
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Quartz Geode Fragment
Silicon Dioxide (SiO2)
sedimentary
White Marble
Metamorphic carbonate rock (primarily CaCO3)
metamorphic
Blue Lace Agate
Silicon Dioxide (SiO2), variety of Chalcedony
gemstone
Granite
Granite (Plutonic Igneous Rock)
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst Geode
Quartz (SiO2)
mineral
Amethyst Geode
Quartz (SiO2, variety Amethyst)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Imperial Jasper
Microcrystalline Quartz (Chalcedony), SiO2
sedimentary
Dyed Agate
Silicon Dioxide (Chalcedony), SiO2
gemstone
Green Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Landscape Boulder / River Rock
Granitic or Quartzite Rock
igneous