Green Quartzite (River Stone)
Metamorphic Quartz (SiO2) with inclusions (typically Fuchsite or Chlorite)
metamorphic
Category
Carved Stone
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Likely weathered gray-green stone, possibly serpentinite
Serpentinite (predominantly serpentine-group minerals; identification uncertain from image)
metamorphic
Granite
Phaneritic plutonic igneous rock (Sialic)
igneous
Carnelian Agate
Silicon Dioxide (SiO2) with Iron Oxide impurities
mineral
Diorite
Diorite
igneous
Greenish rough stone, possibly serpentine or soapstone
Indeterminate from the image; possible serpentinite (serpentine-group minerals) or talc-rich soapstone
metamorphic
Diorite
Diorite (intermediate intrusive igneous rock)
igneous
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Tumbled amethyst (likely)
Quartz, SiO₂; purple coloration from irradiation and iron impurities
mineral
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3Si2O5(OH)4
metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Diorite with Quartz Veins
Diorite
igneous
Red Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Red Jasper
Microcrystalline Quartz (SiO2) with Hematite inclusions
sedimentary
Marble
Recrystallized Calcite (CaCO3) / Marble
metamorphic
Dyed Magnesite (Howlite imitation)
Magnesium carbonate (MgCO3) with dye
mineral
Carnelian
Silicon dioxide (chalcedony variety), SiO2
gemstone
Porphyry
Porphyritic igneous rock
igneous
Yellow Jasper
Silicon Dioxide (SiO2) with goethite or limonite inclusions
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Limestone
Calcium carbonate rock (CaCO3)
sedimentary
Diorite
Phaneritic Intrusive Igneous Rock (Intermediate Composition)
igneous
Polished Yellow Jaspar
Chalcedony / Quartz (SiO2 with Iron Oxides)
sedimentary
Red Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
mineral
Carnelian
Silicon Dioxide (Quartz variety), SiO2
mineral
Turritella Agate (Fossiliferous Chert)
Silicified Elimia tenera (Fossiliferous Chalcedony)
sedimentary
Diorite
Intermediate plutonic igneous rock
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite (Leucogranite)
Felsic Plutonic Rock (Granite)
igneous
Granite
Granite (Silicic Plutonic Rock)
igneous
Granite
Phaneritic Intrusive Igneous Rock (Granite)
igneous
Sandstone
Sandstone (Arenite)
sedimentary
Gneiss (Granitic Gneiss)
Gneiss (composed mainly of quartz, K-feldspar, plagioclase, and biotite)
metamorphic
Granite
Granite (primarily Quartz, Feldspar, and Mica)
igneous
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 composition dominant)
sedimentary
Polished jasper or chert carving (tentative)
Microcrystalline quartz, SiO₂, likely jasper/chert; exact identification is uncertain from the image
mineral
Tumbled Carnelian
Carnelian (Var. of Chalcedony, SiO2)
mineral
Granite
Phaneritic Felsic Igneous Rock
igneous
Sandstone (likely Quartzose Sandstone)
Arenite (SiO2 principal composition)
sedimentary
Satin Spar Gypsum (Satin Spar Selenite tower)
Gypsum (CaSO4·2H2O)
mineral
Red Jasper (in Quartz/Chalcedony)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary